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Finding the Fourth Proportional to 18,545.10, 27,817.65 and 15,629.10

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Solution

The fourth proportional to 18,545.10, 27,817.65 and 15,629.10 is: 23,443.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,545.10 : 27,817.65 = 15,629.10 : x
  2. Step 2: Convert to fraction form
    18,545.10/27,817.65 = 15,629.10/x
  3. Step 3: Cross multiply
    18,545.10x = 27,817.65 × 15,629.10
  4. Step 4: Simplify right side
    18,545.10x = 434,764,833.62
  5. Step 5: Solve for x
    x = 434,764,833.62/18,545.10
  6. Step 6: Final answer
    x = 23,443.65

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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.