Home / 20,140.08-27,791.28-11,761.44

Finding the Fourth Proportional to 20,140.08, 27,791.28 and 11,761.44

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Solution

The fourth proportional to 20,140.08, 27,791.28 and 11,761.44 is: 16,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.08 : 27,791.28 = 11,761.44 : x
  2. Step 2: Convert to fraction form
    20,140.08/27,791.28 = 11,761.44/x
  3. Step 3: Cross multiply
    20,140.08x = 27,791.28 × 11,761.44
  4. Step 4: Simplify right side
    20,140.08x = 326,865,472.24
  5. Step 5: Solve for x
    x = 326,865,472.24/20,140.08
  6. Step 6: Final answer
    x = 16,229.60

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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.