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Finding the Fourth Proportional to 28,591.66, 42,876.96 and 9,866.92

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Solution

The fourth proportional to 28,591.66, 42,876.96 and 9,866.92 is: 14,796.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,591.66 : 42,876.96 = 9,866.92 : x
  2. Step 2: Convert to fraction form
    28,591.66/42,876.96 = 9,866.92/x
  3. Step 3: Cross multiply
    28,591.66x = 42,876.96 × 9,866.92
  4. Step 4: Simplify right side
    28,591.66x = 423,063,534.16
  5. Step 5: Solve for x
    x = 423,063,534.16/28,591.66
  6. Step 6: Final answer
    x = 14,796.75

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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.