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Finding the Fourth Proportional to 18,587.76, 27,849.24 and 15,487.68

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Solution

The fourth proportional to 18,587.76, 27,849.24 and 15,487.68 is: 23,204.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,587.76 : 27,849.24 = 15,487.68 : x
  2. Step 2: Convert to fraction form
    18,587.76/27,849.24 = 15,487.68/x
  3. Step 3: Cross multiply
    18,587.76x = 27,849.24 × 15,487.68
  4. Step 4: Simplify right side
    18,587.76x = 431,320,117.36
  5. Step 5: Solve for x
    x = 431,320,117.36/18,587.76
  6. Step 6: Final answer
    x = 23,204.52

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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.