Question

Find the value of n in each of the following proportions.

1. 18/n = 21/28

2. 12/16 = n/64​

Answer 1

24

Explanation:

18/n = 21/28 You can cancel, but calculators make that unnecessary. Cross multiply

21n = 18 * 28

21n = 504 Divide by 21

n = 504 / 21

n = 24

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12/16 = n / 64 Cross Multiply

16n = 12 * 64

16n = 768 Divide by 16

n = 768/16

n = 48