Home / 31,429.94-43,373.22-18,691.88

Finding the Fourth Proportional to 31,429.94, 43,373.22 and 18,691.88

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Solution

The fourth proportional to 31,429.94, 43,373.22 and 18,691.88 is: 25,794.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,429.94 : 43,373.22 = 18,691.88 : x
  2. Step 2: Convert to fraction form
    31,429.94/43,373.22 = 18,691.88/x
  3. Step 3: Cross multiply
    31,429.94x = 43,373.22 × 18,691.88
  4. Step 4: Simplify right side
    31,429.94x = 810,727,023.45
  5. Step 5: Solve for x
    x = 810,727,023.45/31,429.94
  6. Step 6: Final answer
    x = 25,794.74

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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.