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Finding the Fourth Proportional to 27,332.31, 40,999.94 and 8,613.80

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Solution

The fourth proportional to 27,332.31, 40,999.94 and 8,613.80 is: 12,921.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,332.31 : 40,999.94 = 8,613.80 : x
  2. Step 2: Convert to fraction form
    27,332.31/40,999.94 = 8,613.80/x
  3. Step 3: Cross multiply
    27,332.31x = 40,999.94 × 8,613.80
  4. Step 4: Simplify right side
    27,332.31x = 353,165,035.10
  5. Step 5: Solve for x
    x = 353,165,035.10/27,332.31
  6. Step 6: Final answer
    x = 12,921.16

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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.