Home / 38,517.12-57,781.44-12,222.72

Finding the Fourth Proportional to 38,517.12, 57,781.44 and 12,222.72

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Solution

The fourth proportional to 38,517.12, 57,781.44 and 12,222.72 is: 18,335.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,517.12 : 57,781.44 = 12,222.72 : x
  2. Step 2: Convert to fraction form
    38,517.12/57,781.44 = 12,222.72/x
  3. Step 3: Cross multiply
    38,517.12x = 57,781.44 × 12,222.72
  4. Step 4: Simplify right side
    38,517.12x = 706,246,362.32
  5. Step 5: Solve for x
    x = 706,246,362.32/38,517.12
  6. Step 6: Final answer
    x = 18,335.91

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1.5x scale

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.