Home / 20,057.10-27,679.82-11,105.59

Finding the Fourth Proportional to 20,057.10, 27,679.82 and 11,105.59

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Solution

The fourth proportional to 20,057.10, 27,679.82 and 11,105.59 is: 15,326.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.10 : 27,679.82 = 11,105.59 : x
  2. Step 2: Convert to fraction form
    20,057.10/27,679.82 = 11,105.59/x
  3. Step 3: Cross multiply
    20,057.10x = 27,679.82 × 11,105.59
  4. Step 4: Simplify right side
    20,057.10x = 307,400,635.23
  5. Step 5: Solve for x
    x = 307,400,635.23/20,057.10
  6. Step 6: Final answer
    x = 15,326.28

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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.