Home / 15,540.32-21,446.16-9,251.84

Finding the Fourth Proportional to 15,540.32, 21,446.16 and 9,251.84

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Solution

The fourth proportional to 15,540.32, 21,446.16 and 9,251.84 is: 12,767.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.32 : 21,446.16 = 9,251.84 : x
  2. Step 2: Convert to fraction form
    15,540.32/21,446.16 = 9,251.84/x
  3. Step 3: Cross multiply
    15,540.32x = 21,446.16 × 9,251.84
  4. Step 4: Simplify right side
    15,540.32x = 198,416,440.93
  5. Step 5: Solve for x
    x = 198,416,440.93/15,540.32
  6. Step 6: Final answer
    x = 12,767.85

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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.