Home / 31,259.52-43,139.16-18,691.56

Finding the Fourth Proportional to 31,259.52, 43,139.16 and 18,691.56

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Solution

The fourth proportional to 31,259.52, 43,139.16 and 18,691.56 is: 25,794.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,259.52 : 43,139.16 = 18,691.56 : x
  2. Step 2: Convert to fraction form
    31,259.52/43,139.16 = 18,691.56/x
  3. Step 3: Cross multiply
    31,259.52x = 43,139.16 × 18,691.56
  4. Step 4: Simplify right side
    31,259.52x = 806,338,197.49
  5. Step 5: Solve for x
    x = 806,338,197.49/31,259.52
  6. Step 6: Final answer
    x = 25,794.96

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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.