Home / 20,480.12-28,253.75-11,744.13

Finding the Fourth Proportional to 20,480.12, 28,253.75 and 11,744.13

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Solution

The fourth proportional to 20,480.12, 28,253.75 and 11,744.13 is: 16,201.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480.12 : 28,253.75 = 11,744.13 : x
  2. Step 2: Convert to fraction form
    20,480.12/28,253.75 = 11,744.13/x
  3. Step 3: Cross multiply
    20,480.12x = 28,253.75 × 11,744.13
  4. Step 4: Simplify right side
    20,480.12x = 331,815,654.27
  5. Step 5: Solve for x
    x = 331,815,654.27/20,480.12
  6. Step 6: Final answer
    x = 16,201.85

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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.