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Finding the Fourth Proportional to 28,481.73, 42,727.22 and 8,760.30

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Solution

The fourth proportional to 28,481.73, 42,727.22 and 8,760.30 is: 13,141.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,481.73 : 42,727.22 = 8,760.30 : x
  2. Step 2: Convert to fraction form
    28,481.73/42,727.22 = 8,760.30/x
  3. Step 3: Cross multiply
    28,481.73x = 42,727.22 × 8,760.30
  4. Step 4: Simplify right side
    28,481.73x = 374,303,359.17
  5. Step 5: Solve for x
    x = 374,303,359.17/28,481.73
  6. Step 6: Final answer
    x = 13,141.88

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1.5x scale

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.