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Finding the Fourth Proportional to 28,862.30, 43,329.90 and 15,545.90

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Solution

The fourth proportional to 28,862.30, 43,329.90 and 15,545.90 is: 23,338.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,862.30 : 43,329.90 = 15,545.90 : x
  2. Step 2: Convert to fraction form
    28,862.30/43,329.90 = 15,545.90/x
  3. Step 3: Cross multiply
    28,862.30x = 43,329.90 × 15,545.90
  4. Step 4: Simplify right side
    28,862.30x = 673,602,292.41
  5. Step 5: Solve for x
    x = 673,602,292.41/28,862.30
  6. Step 6: Final answer
    x = 23,338.48

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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.