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Finding the Fourth Proportional to 18,637.53, 27,956.31 and 5,489.61

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Solution

The fourth proportional to 18,637.53, 27,956.31 and 5,489.61 is: 8,234.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.53 : 27,956.31 = 5,489.61 : x
  2. Step 2: Convert to fraction form
    18,637.53/27,956.31 = 5,489.61/x
  3. Step 3: Cross multiply
    18,637.53x = 27,956.31 × 5,489.61
  4. Step 4: Simplify right side
    18,637.53x = 153,469,238.94
  5. Step 5: Solve for x
    x = 153,469,238.94/18,637.53
  6. Step 6: Final answer
    x = 8,234.42

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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.