Finding the Fourth Proportional to 20,912,694.08, 28,861,766.57 and 12,657,299.49
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Solution
The fourth proportional to 20,912,694.08, 28,861,766.57 and 12,657,299.49 is: 17,468,434.34
Step by Step Solution
- Step 1: Write the proportion equation
20,912,694.08 : 28,861,766.57 = 12,657,299.49 : x - Step 2: Convert to fraction form
20,912,694.08/28,861,766.57 = 12,657,299.49/x - Step 3: Cross multiply
20,912,694.08x = 28,861,766.57 × 12,657,299.49 - Step 4: Simplify right side
20,912,694.08x = 365,312,023,318,603.31 - Step 5: Solve for x
x = 365,312,023,318,603.31/20,912,694.08 - Step 6: Final answer
x = 17,468,434.34
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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.