Finding the Fourth Proportional to 21,005,438.16, 31,508,408.12 and 5,858,448.08
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Solution
The fourth proportional to 21,005,438.16, 31,508,408.12 and 5,858,448.08 is: 8,787,742.09
Step by Step Solution
- Step 1: Write the proportion equation
21,005,438.16 : 31,508,408.12 = 5,858,448.08 : x - Step 2: Convert to fraction form
21,005,438.16/31,508,408.12 = 5,858,448.08/x - Step 3: Cross multiply
21,005,438.16x = 31,508,408.12 × 5,858,448.08 - Step 4: Simplify right side
21,005,438.16x = 184,590,373,054,470.41 - Step 5: Solve for x
x = 184,590,373,054,470.41/21,005,438.16 - Step 6: Final answer
x = 8,787,742.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.