Home / 12,691.68-18,997.53-11,354.36

Finding the Fourth Proportional to 12,691.68, 18,997.53 and 11,354.36

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Solution

The fourth proportional to 12,691.68, 18,997.53 and 11,354.36 is: 16,995.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.68 : 18,997.53 = 11,354.36 : x
  2. Step 2: Convert to fraction form
    12,691.68/18,997.53 = 11,354.36/x
  3. Step 3: Cross multiply
    12,691.68x = 18,997.53 × 11,354.36
  4. Step 4: Simplify right side
    12,691.68x = 215,704,794.73
  5. Step 5: Solve for x
    x = 215,704,794.73/12,691.68
  6. Step 6: Final answer
    x = 16,995.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.