
A ratio of 12 to 51 can be written as 12 to 51, 12:51, or 12/51. Furthermore, 12 and 51 can be the quantity or measurement of anything, such as students, fruit, weights, heights, speed and so on.
A ratio of 12 to 51 simply means that for every 12 of something, there are 51 of something else, with a total of 63.
In the box below, you can enter a number in either box and we will calculate the other number to keep the ratio of 12 to 51. In other words, we will calculate the corresponding equivalent ratio of 12:51 for you.
To calculate the left side of the ratio, our calculator multiplies the right side by 12 and then divides the product by 51. To calculate the right side of the ratio, our calculator multiplies the left side by 51 and then divides the product by 12. Answers are rounded to two decimals if necessary.
Below is a list of equivalent ratios of 12:51 that we created using our 12:51 ratio calculator above.
4:17
8:34
12:51
16:68
20:85
24:102
28:119
32:136
36:153
40:170
44:187
48:204
We have also created a pie chart for you to put 12:51 ratio in perspective. To do so, we divided a pie into 63 pieces and then colored 12 pieces green and 51 pieces blue. The pie will look exactly the same using any equivalent ratio of 12:51.

The green part of the pie covers 19.05% and the blue part covers 80.95%. To calculate the percentages, we divided each side of the ratio by its total and then multiplied by 100, like this:
(12 / 63)×100 ≈ 19.05
(51 / 63)×100 ≈ 80.95
In fractional terms, 12/51 of the pie above is colored in green. This means that the ratio of 12 to 51 or 12:51 can also be expressed as a fraction, where the 12 to the left of the colon is the numerator and the 51 to the right of the colon is the denominator:
12:51 = 12/51
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 12 to 51, the width is 12 and the height is 51. Below is a picture of what a rectangle with a ratio of 12:51 looks like.

Since the simplest form of the fraction 12/51 is 4/17, the simplest form of the ratio 12:51 is also 4:17.
Ratio Calculator
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Ratio of 12 to 52
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