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Finding the Fourth Proportional to 18,631, 27,954.20 and 7,545.61

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Solution

The fourth proportional to 18,631, 27,954.20 and 7,545.61 is: 11,321.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631 : 27,954.20 = 7,545.61 : x
  2. Step 2: Convert to fraction form
    18,631/27,954.20 = 7,545.61/x
  3. Step 3: Cross multiply
    18,631x = 27,954.20 × 7,545.61
  4. Step 4: Simplify right side
    18,631x = 210,931,491.06
  5. Step 5: Solve for x
    x = 210,931,491.06/18,631
  6. Step 6: Final answer
    x = 11,321.53

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.