Finding the Fourth Proportional to 18,934,892.10, 28,331,479.35 and 12,557,600.10
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Solution
The fourth proportional to 18,934,892.10, 28,331,479.35 and 12,557,600.10 is: 18,789,406.67
Step by Step Solution
- Step 1: Write the proportion equation
18,934,892.10 : 28,331,479.35 = 12,557,600.10 : x - Step 2: Convert to fraction form
18,934,892.10/28,331,479.35 = 12,557,600.10/x - Step 3: Cross multiply
18,934,892.10x = 28,331,479.35 × 12,557,600.10 - Step 4: Simplify right side
18,934,892.10x = 355,775,387,918,707.94 - Step 5: Solve for x
x = 355,775,387,918,707.94/18,934,892.10 - Step 6: Final answer
x = 18,789,406.67
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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.