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Finding the Fourth Proportional to 27,958.78, 41,939.48 and 9,240.49

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Solution

The fourth proportional to 27,958.78, 41,939.48 and 9,240.49 is: 13,861.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,958.78 : 41,939.48 = 9,240.49 : x
  2. Step 2: Convert to fraction form
    27,958.78/41,939.48 = 9,240.49/x
  3. Step 3: Cross multiply
    27,958.78x = 41,939.48 × 9,240.49
  4. Step 4: Simplify right side
    27,958.78x = 387,541,345.55
  5. Step 5: Solve for x
    x = 387,541,345.55/27,958.78
  6. Step 6: Final answer
    x = 13,861.17

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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.