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Find the missing number in this proportion 10/15=?/21
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3 votes
Find the missing number in this proportion 10/15=?/21

User Tiangolo
by
5.0k points

1 Answer

3 votes

Answer:

x = 14

Explanation:

Using cross products

10 x

----- = --------------

15 21

10*21 = 15x

210 = 15x

Divide each side by 15

210/15 =x

14 =x

User Lansana Camara
by
4.7k points
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