Find the 3rd proportional to 9 and 21.
Answer & explanation
Correct answer: option 1
Third proportion to 9, 21 = $\frac{21\; \times\;21}{9}$
= 49
Find the 3rd proportional to 9 and 21.
Correct answer: option 1
Third proportion to 9, 21 = $\frac{21\; \times\;21}{9}$
= 49