Home / 20,221.44-27,906.84-11,270.40

Finding the Fourth Proportional to 20,221.44, 27,906.84 and 11,270.40

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Solution

The fourth proportional to 20,221.44, 27,906.84 and 11,270.40 is: 15,553.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.44 : 27,906.84 = 11,270.40 : x
  2. Step 2: Convert to fraction form
    20,221.44/27,906.84 = 11,270.40/x
  3. Step 3: Cross multiply
    20,221.44x = 27,906.84 × 11,270.40
  4. Step 4: Simplify right side
    20,221.44x = 314,521,249.54
  5. Step 5: Solve for x
    x = 314,521,249.54/20,221.44
  6. Step 6: Final answer
    x = 15,553.85

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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.