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Finding the Fourth Proportional to 28,374.62, 42,560.37 and 8,651.52

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Solution

The fourth proportional to 28,374.62, 42,560.37 and 8,651.52 is: 12,976.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,374.62 : 42,560.37 = 8,651.52 : x
  2. Step 2: Convert to fraction form
    28,374.62/42,560.37 = 8,651.52/x
  3. Step 3: Cross multiply
    28,374.62x = 42,560.37 × 8,651.52
  4. Step 4: Simplify right side
    28,374.62x = 368,211,892.26
  5. Step 5: Solve for x
    x = 368,211,892.26/28,374.62
  6. Step 6: Final answer
    x = 12,976.81

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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.