Home / 15,517.20-21,414.60-8,800.32

Finding the Fourth Proportional to 15,517.20, 21,414.60 and 8,800.32

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Solution

The fourth proportional to 15,517.20, 21,414.60 and 8,800.32 is: 12,144.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.20 : 21,414.60 = 8,800.32 : x
  2. Step 2: Convert to fraction form
    15,517.20/21,414.60 = 8,800.32/x
  3. Step 3: Cross multiply
    15,517.20x = 21,414.60 × 8,800.32
  4. Step 4: Simplify right side
    15,517.20x = 188,455,332.67
  5. Step 5: Solve for x
    x = 188,455,332.67/15,517.20
  6. Step 6: Final answer
    x = 12,144.93

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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.