Find the 3rd proportion of 21 and 42 .
Answer & explanation
Correct answer: option 3
3rd proportion of a, b = \(\frac{b^2}{a}\)
⇒ 3rd Proportion = \(\frac{42^2}{21}\) = 84
Find the 3rd proportion of 21 and 42 .
Correct answer: option 3
3rd proportion of a, b = \(\frac{b^2}{a}\)
⇒ 3rd Proportion = \(\frac{42^2}{21}\) = 84