Finding the Fourth Proportional to 11,278,332.72, 15,564,116.52 and 6,121,695.60
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Solution
The fourth proportional to 11,278,332.72, 15,564,116.52 and 6,121,695.60 is: 8,447,949.35
Step by Step Solution
- Step 1: Write the proportion equation
11,278,332.72 : 15,564,116.52 = 6,121,695.60 : x - Step 2: Convert to fraction form
11,278,332.72/15,564,116.52 = 6,121,695.60/x - Step 3: Cross multiply
11,278,332.72x = 15,564,116.52 × 6,121,695.60 - Step 4: Simplify right side
11,278,332.72x = 95,278,783,618,371.30 - Step 5: Solve for x
x = 95,278,783,618,371.30/11,278,332.72 - Step 6: Final answer
x = 8,447,949.35
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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.