Finding the Fourth Proportional to 11,728,879.38, 16,176,257.28 and 8,255,715.62
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Solution
The fourth proportional to 11,728,879.38, 16,176,257.28 and 8,255,715.62 is: 11,386,132.94
Step by Step Solution
- Step 1: Write the proportion equation
11,728,879.38 : 16,176,257.28 = 8,255,715.62 : x - Step 2: Convert to fraction form
11,728,879.38/16,176,257.28 = 8,255,715.62/x - Step 3: Cross multiply
11,728,879.38x = 16,176,257.28 × 8,255,715.62 - Step 4: Simplify right side
11,728,879.38x = 133,546,579,818,753.42 - Step 5: Solve for x
x = 133,546,579,818,753.42/11,728,879.38 - Step 6: Final answer
x = 11,386,132.94
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1.5x scale
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.