They are proportional magnitudes, the rule of three is made (directly proportional).
\(\frac{x}{20} = \frac{1.8}{2.4}\)
multiply cross
\(2.4*x = 20*1.8\)
\(2.4x = 36\)
\(x = \frac{36}{2.4}\)
\(\boxed{\boxed{x = 15\:meters\:height}}\end{array}}\qquad\quad\checkmark\)
Answer:
\(\underline{\textbf{The\:Ferris\:wheel\:is\:15\:meters\:high}}\)
