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Finding the Fourth Proportional to 28,114.92, 42,179.70 and 8,393.49

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Solution

The fourth proportional to 28,114.92, 42,179.70 and 8,393.49 is: 12,592.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.92 : 42,179.70 = 8,393.49 : x
  2. Step 2: Convert to fraction form
    28,114.92/42,179.70 = 8,393.49/x
  3. Step 3: Cross multiply
    28,114.92x = 42,179.70 × 8,393.49
  4. Step 4: Simplify right side
    28,114.92x = 354,034,890.15
  5. Step 5: Solve for x
    x = 354,034,890.15/28,114.92
  6. Step 6: Final answer
    x = 12,592.42

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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.