Home / 28,310.25-42,471.92-8,320.04

Finding the Fourth Proportional to 28,310.25, 42,471.92 and 8,320.04

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Solution

The fourth proportional to 28,310.25, 42,471.92 and 8,320.04 is: 12,481.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,310.25 : 42,471.92 = 8,320.04 : x
  2. Step 2: Convert to fraction form
    28,310.25/42,471.92 = 8,320.04/x
  3. Step 3: Cross multiply
    28,310.25x = 42,471.92 × 8,320.04
  4. Step 4: Simplify right side
    28,310.25x = 353,368,073.28
  5. Step 5: Solve for x
    x = 353,368,073.28/28,310.25
  6. Step 6: Final answer
    x = 12,481.98

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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.