Finding the Fourth Proportional to 18,513,693.40, 25,549,084.64 and 11,170,107.65
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Solution
The fourth proportional to 18,513,693.40, 25,549,084.64 and 11,170,107.65 is: 15,414,861.83
Step by Step Solution
- Step 1: Write the proportion equation
18,513,693.40 : 25,549,084.64 = 11,170,107.65 : x - Step 2: Convert to fraction form
18,513,693.40/25,549,084.64 = 11,170,107.65/x - Step 3: Cross multiply
18,513,693.40x = 25,549,084.64 × 11,170,107.65 - Step 4: Simplify right side
18,513,693.40x = 285,386,025,687,941.31 - Step 5: Solve for x
x = 285,386,025,687,941.31/18,513,693.40 - Step 6: Final answer
x = 15,414,861.83
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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.