Home / 20,761.88-28,651.28-11,330.44

Finding the Fourth Proportional to 20,761.88, 28,651.28 and 11,330.44

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Solution

The fourth proportional to 20,761.88, 28,651.28 and 11,330.44 is: 15,635.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.88 : 28,651.28 = 11,330.44 : x
  2. Step 2: Convert to fraction form
    20,761.88/28,651.28 = 11,330.44/x
  3. Step 3: Cross multiply
    20,761.88x = 28,651.28 × 11,330.44
  4. Step 4: Simplify right side
    20,761.88x = 324,631,608.96
  5. Step 5: Solve for x
    x = 324,631,608.96/20,761.88
  6. Step 6: Final answer
    x = 15,635.94

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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.