Home / 20,906.97-28,850.74-11,475.73

Finding the Fourth Proportional to 20,906.97, 28,850.74 and 11,475.73

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Solution

The fourth proportional to 20,906.97, 28,850.74 and 11,475.73 is: 15,836.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.97 : 28,850.74 = 11,475.73 : x
  2. Step 2: Convert to fraction form
    20,906.97/28,850.74 = 11,475.73/x
  3. Step 3: Cross multiply
    20,906.97x = 28,850.74 × 11,475.73
  4. Step 4: Simplify right side
    20,906.97x = 331,083,302.54
  5. Step 5: Solve for x
    x = 331,083,302.54/20,906.97
  6. Step 6: Final answer
    x = 15,836.03

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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.