Home / 31,691.46-43,731.26-18,942.14

Finding the Fourth Proportional to 31,691.46, 43,731.26 and 18,942.14

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Solution

The fourth proportional to 31,691.46, 43,731.26 and 18,942.14 is: 26,138.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,691.46 : 43,731.26 = 18,942.14 : x
  2. Step 2: Convert to fraction form
    31,691.46/43,731.26 = 18,942.14/x
  3. Step 3: Cross multiply
    31,691.46x = 43,731.26 × 18,942.14
  4. Step 4: Simplify right side
    31,691.46x = 828,363,649.30
  5. Step 5: Solve for x
    x = 828,363,649.30/31,691.46
  6. Step 6: Final answer
    x = 26,138.39

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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.