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Finding the Fourth Proportional to 13,610.97, 20,398.52 and 12,723.11

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Solution

The fourth proportional to 13,610.97, 20,398.52 and 12,723.11 is: 19,067.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.97 : 20,398.52 = 12,723.11 : x
  2. Step 2: Convert to fraction form
    13,610.97/20,398.52 = 12,723.11/x
  3. Step 3: Cross multiply
    13,610.97x = 20,398.52 × 12,723.11
  4. Step 4: Simplify right side
    13,610.97x = 259,532,613.80
  5. Step 5: Solve for x
    x = 259,532,613.80/13,610.97
  6. Step 6: Final answer
    x = 19,067.90

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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.