Finding the Fourth Proportional to 21,639,245.18, 29,861,261.50 and 11,849,520.68
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Solution
The fourth proportional to 21,639,245.18, 29,861,261.50 and 11,849,520.68 is: 16,351,847.43
Step by Step Solution
- Step 1: Write the proportion equation
21,639,245.18 : 29,861,261.50 = 11,849,520.68 : x - Step 2: Convert to fraction form
21,639,245.18/29,861,261.50 = 11,849,520.68/x - Step 3: Cross multiply
21,639,245.18x = 29,861,261.50 × 11,849,520.68 - Step 4: Simplify right side
21,639,245.18x = 353,841,635,630,405.31 - Step 5: Solve for x
x = 353,841,635,630,405.31/21,639,245.18 - Step 6: Final answer
x = 16,351,847.43
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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.