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