Home / 15,025.12-20,734.82-8,310.76

Finding the Fourth Proportional to 15,025.12, 20,734.82 and 8,310.76

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Solution

The fourth proportional to 15,025.12, 20,734.82 and 8,310.76 is: 11,468.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,025.12 : 20,734.82 = 8,310.76 : x
  2. Step 2: Convert to fraction form
    15,025.12/20,734.82 = 8,310.76/x
  3. Step 3: Cross multiply
    15,025.12x = 20,734.82 × 8,310.76
  4. Step 4: Simplify right side
    15,025.12x = 172,322,112.66
  5. Step 5: Solve for x
    x = 172,322,112.66/15,025.12
  6. Step 6: Final answer
    x = 11,468.93

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Double scale
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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.