Home / 20,057.82-27,679.71-11,104.78

Finding the Fourth Proportional to 20,057.82, 27,679.71 and 11,104.78

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Solution

The fourth proportional to 20,057.82, 27,679.71 and 11,104.78 is: 15,324.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.82 : 27,679.71 = 11,104.78 : x
  2. Step 2: Convert to fraction form
    20,057.82/27,679.71 = 11,104.78/x
  3. Step 3: Cross multiply
    20,057.82x = 27,679.71 × 11,104.78
  4. Step 4: Simplify right side
    20,057.82x = 307,377,090.01
  5. Step 5: Solve for x
    x = 307,377,090.01/20,057.82
  6. Step 6: Final answer
    x = 15,324.55

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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.