Question

Find the measure of x and y.

Answer 1

Create a proportion for x first. Use known values.

`(4)/(x) =(12)/(21)`

84 = 12x

Divide both sides by 12.

x = 7

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Create a proportion for y.

`(12)/(y) =(4)/(10)`

120 = 4y

Divide both sides by 4.

y = 30

`\boxed {x = 7,~y = 30}`