Home / 20,617.97-28,454.76-12,550.97

Finding the Fourth Proportional to 20,617.97, 28,454.76 and 12,550.97

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Solution

The fourth proportional to 20,617.97, 28,454.76 and 12,550.97 is: 17,321.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.97 : 28,454.76 = 12,550.97 : x
  2. Step 2: Convert to fraction form
    20,617.97/28,454.76 = 12,550.97/x
  3. Step 3: Cross multiply
    20,617.97x = 28,454.76 × 12,550.97
  4. Step 4: Simplify right side
    20,617.97x = 357,134,910.25
  5. Step 5: Solve for x
    x = 357,134,910.25/20,617.97
  6. Step 6: Final answer
    x = 17,321.54

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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.