Home / 31,691.44-43,726.80-18,948.76

Finding the Fourth Proportional to 31,691.44, 43,726.80 and 18,948.76

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Solution

The fourth proportional to 31,691.44, 43,726.80 and 18,948.76 is: 26,144.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,691.44 : 43,726.80 = 18,948.76 : x
  2. Step 2: Convert to fraction form
    31,691.44/43,726.80 = 18,948.76/x
  3. Step 3: Cross multiply
    31,691.44x = 43,726.80 × 18,948.76
  4. Step 4: Simplify right side
    31,691.44x = 828,568,638.77
  5. Step 5: Solve for x
    x = 828,568,638.77/31,691.44
  6. Step 6: Final answer
    x = 26,144.87

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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.