Finding the Fourth Proportional to 15,159,517.96, 20,920,408.50 and 8,284,289.80
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Solution
The fourth proportional to 15,159,517.96, 20,920,408.50 and 8,284,289.80 is: 11,432,469.50
Step by Step Solution
- Step 1: Write the proportion equation
15,159,517.96 : 20,920,408.50 = 8,284,289.80 : x - Step 2: Convert to fraction form
15,159,517.96/20,920,408.50 = 8,284,289.80/x - Step 3: Cross multiply
15,159,517.96x = 20,920,408.50 × 8,284,289.80 - Step 4: Simplify right side
15,159,517.96x = 173,310,726,748,383.28 - Step 5: Solve for x
x = 173,310,726,748,383.28/15,159,517.96 - Step 6: Final answer
x = 11,432,469.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.