Home / 20,906.97-28,851.69-11,346.90

Finding the Fourth Proportional to 20,906.97, 28,851.69 and 11,346.90

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Solution

The fourth proportional to 20,906.97, 28,851.69 and 11,346.90 is: 15,658.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.97 : 28,851.69 = 11,346.90 : x
  2. Step 2: Convert to fraction form
    20,906.97/28,851.69 = 11,346.90/x
  3. Step 3: Cross multiply
    20,906.97x = 28,851.69 × 11,346.90
  4. Step 4: Simplify right side
    20,906.97x = 327,377,241.26
  5. Step 5: Solve for x
    x = 327,377,241.26/20,906.97
  6. Step 6: Final answer
    x = 15,658.76

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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.