Home / 20,067.85-27,691.35-11,113.12

Finding the Fourth Proportional to 20,067.85, 27,691.35 and 11,113.12

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Solution

The fourth proportional to 20,067.85, 27,691.35 and 11,113.12 is: 15,334.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,067.85 : 27,691.35 = 11,113.12 : x
  2. Step 2: Convert to fraction form
    20,067.85/27,691.35 = 11,113.12/x
  3. Step 3: Cross multiply
    20,067.85x = 27,691.35 × 11,113.12
  4. Step 4: Simplify right side
    20,067.85x = 307,737,295.51
  5. Step 5: Solve for x
    x = 307,737,295.51/20,067.85
  6. Step 6: Final answer
    x = 15,334.84

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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.