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Finding the Fourth Proportional to 18,042.48, 24,843.24 and 15,791.76

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Solution

The fourth proportional to 18,042.48, 24,843.24 and 15,791.76 is: 21,744.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,042.48 : 24,843.24 = 15,791.76 : x
  2. Step 2: Convert to fraction form
    18,042.48/24,843.24 = 15,791.76/x
  3. Step 3: Cross multiply
    18,042.48x = 24,843.24 × 15,791.76
  4. Step 4: Simplify right side
    18,042.48x = 392,318,483.70
  5. Step 5: Solve for x
    x = 392,318,483.70/18,042.48
  6. Step 6: Final answer
    x = 21,744.16

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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.