Home / 13,855.97-20,781.46-3,992.83

Finding the Fourth Proportional to 13,855.97, 20,781.46 and 3,992.83

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Solution

The fourth proportional to 13,855.97, 20,781.46 and 3,992.83 is: 5,988.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.97 : 20,781.46 = 3,992.83 : x
  2. Step 2: Convert to fraction form
    13,855.97/20,781.46 = 3,992.83/x
  3. Step 3: Cross multiply
    13,855.97x = 20,781.46 × 3,992.83
  4. Step 4: Simplify right side
    13,855.97x = 82,976,789.97
  5. Step 5: Solve for x
    x = 82,976,789.97/13,855.97
  6. Step 6: Final answer
    x = 5,988.52

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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.