Home / 20,906.25-28,850.97-11,474.82

Finding the Fourth Proportional to 20,906.25, 28,850.97 and 11,474.82

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Solution

The fourth proportional to 20,906.25, 28,850.97 and 11,474.82 is: 15,835.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.25 : 28,850.97 = 11,474.82 : x
  2. Step 2: Convert to fraction form
    20,906.25/28,850.97 = 11,474.82/x
  3. Step 3: Cross multiply
    20,906.25x = 28,850.97 × 11,474.82
  4. Step 4: Simplify right side
    20,906.25x = 331,059,687.58
  5. Step 5: Solve for x
    x = 331,059,687.58/20,906.25
  6. Step 6: Final answer
    x = 15,835.44

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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.