Question

What value of a makes this proportion 4/12 = a/27

Answer 1

a = 9

Explanation:

`(4)/(12)` =
`(a)/(27)` ( cross- multiply )

12a = 108 ( divide both sides by 12 )

a = 9

Answer 2

The Formula for Percent Proportion is Parts /whole = percent/100. This formula can be used to find the percent of a given ratio and to find the missing value of a part or a whole.