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Finding the Fourth Proportional to 18,270.28, 27,380.58 and 9,487

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Solution

The fourth proportional to 18,270.28, 27,380.58 and 9,487 is: 14,217.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.28 : 27,380.58 = 9,487 : x
  2. Step 2: Convert to fraction form
    18,270.28/27,380.58 = 9,487/x
  3. Step 3: Cross multiply
    18,270.28x = 27,380.58 × 9,487
  4. Step 4: Simplify right side
    18,270.28x = 259,759,562.46
  5. Step 5: Solve for x
    x = 259,759,562.46/18,270.28
  6. Step 6: Final answer
    x = 14,217.60

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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.