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Finding the Fourth Proportional to 18,073.92, 27,109.10 and 7,943.28

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Solution

The fourth proportional to 18,073.92, 27,109.10 and 7,943.28 is: 11,914.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,073.92 : 27,109.10 = 7,943.28 : x
  2. Step 2: Convert to fraction form
    18,073.92/27,109.10 = 7,943.28/x
  3. Step 3: Cross multiply
    18,073.92x = 27,109.10 × 7,943.28
  4. Step 4: Simplify right side
    18,073.92x = 215,335,171.85
  5. Step 5: Solve for x
    x = 215,335,171.85/18,073.92
  6. Step 6: Final answer
    x = 11,914.14

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1.5x scale

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.