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Finding the Fourth Proportional to 18,819.92, 28,227.72 and 5,672.27

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Solution

The fourth proportional to 18,819.92, 28,227.72 and 5,672.27 is: 8,507.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.92 : 28,227.72 = 5,672.27 : x
  2. Step 2: Convert to fraction form
    18,819.92/28,227.72 = 5,672.27/x
  3. Step 3: Cross multiply
    18,819.92x = 28,227.72 × 5,672.27
  4. Step 4: Simplify right side
    18,819.92x = 160,115,249.32
  5. Step 5: Solve for x
    x = 160,115,249.32/18,819.92
  6. Step 6: Final answer
    x = 8,507.75

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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.