Home / 20,067.75-27,693.08-11,115.22

Finding the Fourth Proportional to 20,067.75, 27,693.08 and 11,115.22

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Solution

The fourth proportional to 20,067.75, 27,693.08 and 11,115.22 is: 15,338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,067.75 : 27,693.08 = 11,115.22 : x
  2. Step 2: Convert to fraction form
    20,067.75/27,693.08 = 11,115.22/x
  3. Step 3: Cross multiply
    20,067.75x = 27,693.08 × 11,115.22
  4. Step 4: Simplify right side
    20,067.75x = 307,814,676.68
  5. Step 5: Solve for x
    x = 307,814,676.68/20,067.75
  6. Step 6: Final answer
    x = 15,338.77

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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.