Home / 31,720.32-43,773.12-18,293.76

Finding the Fourth Proportional to 31,720.32, 43,773.12 and 18,293.76

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Solution

The fourth proportional to 31,720.32, 43,773.12 and 18,293.76 is: 25,244.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,720.32 : 43,773.12 = 18,293.76 : x
  2. Step 2: Convert to fraction form
    31,720.32/43,773.12 = 18,293.76/x
  3. Step 3: Cross multiply
    31,720.32x = 43,773.12 × 18,293.76
  4. Step 4: Simplify right side
    31,720.32x = 800,774,951.73
  5. Step 5: Solve for x
    x = 800,774,951.73/31,720.32
  6. Step 6: Final answer
    x = 25,244.86

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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.