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Finding the Fourth Proportional to 28,501.88, 42,734.39 and 15,363.68

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Solution

The fourth proportional to 28,501.88, 42,734.39 and 15,363.68 is: 23,035.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,501.88 : 42,734.39 = 15,363.68 : x
  2. Step 2: Convert to fraction form
    28,501.88/42,734.39 = 15,363.68/x
  3. Step 3: Cross multiply
    28,501.88x = 42,734.39 × 15,363.68
  4. Step 4: Simplify right side
    28,501.88x = 656,557,202.46
  5. Step 5: Solve for x
    x = 656,557,202.46/28,501.88
  6. Step 6: Final answer
    x = 23,035.58

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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.