Ratio of 21 to 63 (21:63)

Ratio of 21 to 63

A ratio of 21 to 63 can be written as 21 to 63, 21:63, or 21/63. Furthermore, 21 and 63 can be the quantity or measurement of anything, such as students, fruit, weights, heights, speed and so on.

A ratio of 21 to 63 simply means that for every 21 of something, there are 63 of something else, with a total of 84.

In the box below, you can enter a number in either box and we will calculate the other number to keep the ratio of 21 to 63. In other words, we will calculate the corresponding equivalent ratio of 21:63 for you.

To calculate the left side of the ratio, our calculator multiplies the right side by 21 and then divides the product by 63. To calculate the right side of the ratio, our calculator multiplies the left side by 63 and then divides the product by 21. Answers are rounded to two decimals if necessary.

Below is a list of equivalent ratios of 21:63 that we created using our 21:63 ratio calculator above.

1:3

2:6

3:9

4:12

5:15

6:18

7:21

8:24

9:27

10:30

11:33

12:36

We have also created a pie chart for you to put 21:63 ratio in perspective. To do so, we divided a pie into 84 pieces and then colored 21 pieces green and 63 pieces blue. The pie will look exactly the same using any equivalent ratio of 21:63.

21 to 63 pie ratio

The green part of the pie covers 25% and the blue part covers 75%. To calculate the percentages, we divided each side of the ratio by its total and then multiplied by 100, like this:

(21 / 84)×100 = 25
(63 / 84)×100 = 75

In fractional terms, 21/63 of the pie above is colored in green. This means that the ratio of 21 to 63 or 21:63 can also be expressed as a fraction, where the 21 to the left of the colon is the numerator and the 63 to the right of the colon is the denominator:

21:63 = 21/63

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 21 to 63, the width is 21 and the height is 63. Below is a picture of what a rectangle with a ratio of 21:63 looks like.

21 to 63 pie rectangle

Since the simplest form of the fraction 21/63 is 1/3, the simplest form of the ratio 21:63 is also 1:3.

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