Find the third propotional to 18 and 24;

June 3, 2016 Quiz Questions

Find the third propotional to 18 and 24;
[A]18
[B]24
[C]16
[D]32

32
Let the third propotional to 18 and 24 be x
Then, 18:24::24:x
=> 18x=24\times 24
=> x=\frac{24\times 24}{18}=32
So the third propotional to 18 and 24 is 32

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