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Finding the Fourth Proportional to 18,487.44, 27,721.44 and 15,901.92

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Solution

The fourth proportional to 18,487.44, 27,721.44 and 15,901.92 is: 23,844.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.44 : 27,721.44 = 15,901.92 : x
  2. Step 2: Convert to fraction form
    18,487.44/27,721.44 = 15,901.92/x
  3. Step 3: Cross multiply
    18,487.44x = 27,721.44 × 15,901.92
  4. Step 4: Simplify right side
    18,487.44x = 440,824,121.16
  5. Step 5: Solve for x
    x = 440,824,121.16/18,487.44
  6. Step 6: Final answer
    x = 23,844.52

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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.