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Finding the Fourth Proportional to 15,025.14, 20,734.29 and 8,310.90

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Solution

The fourth proportional to 15,025.14, 20,734.29 and 8,310.90 is: 11,468.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,025.14 : 20,734.29 = 8,310.90 : x
  2. Step 2: Convert to fraction form
    15,025.14/20,734.29 = 8,310.90/x
  3. Step 3: Cross multiply
    15,025.14x = 20,734.29 × 8,310.90
  4. Step 4: Simplify right side
    15,025.14x = 172,320,610.76
  5. Step 5: Solve for x
    x = 172,320,610.76/15,025.14
  6. Step 6: Final answer
    x = 11,468.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.