Ratio of 18 to 40 (18:40)

Ratio of 18 to 40

A ratio of 18 to 40 can be written as 18 to 40, 18:40, or 18/40. Furthermore, 18 and 40 can be the quantity or measurement of anything, such as students, fruit, weights, heights, speed and so on.

A ratio of 18 to 40 simply means that for every 18 of something, there are 40 of something else, with a total of 58.

In the box below, you can enter a number in either box and we will calculate the other number to keep the ratio of 18 to 40. In other words, we will calculate the corresponding equivalent ratio of 18:40 for you.

To calculate the left side of the ratio, our calculator multiplies the right side by 18 and then divides the product by 40. To calculate the right side of the ratio, our calculator multiplies the left side by 40 and then divides the product by 18. Answers are rounded to two decimals if necessary.

Below is a list of equivalent ratios of 18:40 that we created using our 18:40 ratio calculator above.

9:20

18:40

27:60

36:80

45:100

54:120

63:140

72:160

81:180

90:200

99:220

108:240

We have also created a pie chart for you to put 18:40 ratio in perspective. To do so, we divided a pie into 58 pieces and then colored 18 pieces green and 40 pieces blue. The pie will look exactly the same using any equivalent ratio of 18:40.

18 to 40 pie ratio

The green part of the pie covers 31.03% and the blue part covers 68.97%. To calculate the percentages, we divided each side of the ratio by its total and then multiplied by 100, like this:

(18 / 58)×100 ≈ 31.03
(40 / 58)×100 ≈ 68.97

In fractional terms, 18/40 of the pie above is colored in green. This means that the ratio of 18 to 40 or 18:40 can also be expressed as a fraction, where the 18 to the left of the colon is the numerator and the 40 to the right of the colon is the denominator:

18:40 = 18/40

Ratio is often used when defining rectangles in width:height format. Width and height can be feet, inches, centimeters, or any other kind of length. With a ratio of 18 to 40, the width is 18 and the height is 40. Below is a picture of what a rectangle with a ratio of 18:40 looks like.

18 to 40 pie rectangle

Since the simplest form of the fraction 18/40 is 9/20, the simplest form of the ratio 18:40 is also 9:20.

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Ratio of 18 to 41
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