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Finding the Fourth Proportional to 18,089.42, 27,138.42 and 7,553.57

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Solution

The fourth proportional to 18,089.42, 27,138.42 and 7,553.57 is: 11,332.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,089.42 : 27,138.42 = 7,553.57 : x
  2. Step 2: Convert to fraction form
    18,089.42/27,138.42 = 7,553.57/x
  3. Step 3: Cross multiply
    18,089.42x = 27,138.42 × 7,553.57
  4. Step 4: Simplify right side
    18,089.42x = 204,991,819.47
  5. Step 5: Solve for x
    x = 204,991,819.47/18,089.42
  6. Step 6: Final answer
    x = 11,332.14

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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.