Finding the Fourth Proportional to 11,071,959.66, 15,278,957.91 and 6,491,331.90
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Solution
The fourth proportional to 11,071,959.66, 15,278,957.91 and 6,491,331.90 is: 8,957,834.92
Step by Step Solution
- Step 1: Write the proportion equation
11,071,959.66 : 15,278,957.91 = 6,491,331.90 : x - Step 2: Convert to fraction form
11,071,959.66/15,278,957.91 = 6,491,331.90/x - Step 3: Cross multiply
11,071,959.66x = 15,278,957.91 × 6,491,331.90 - Step 4: Simplify right side
11,071,959.66x = 99,180,786,879,940.33 - Step 5: Solve for x
x = 99,180,786,879,940.33/11,071,959.66 - Step 6: Final answer
x = 8,957,834.92
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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.