Home / 20,761.16-28,650.30-11,329.64

Finding the Fourth Proportional to 20,761.16, 28,650.30 and 11,329.64

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Solution

The fourth proportional to 20,761.16, 28,650.30 and 11,329.64 is: 15,634.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.16 : 28,650.30 = 11,329.64 : x
  2. Step 2: Convert to fraction form
    20,761.16/28,650.30 = 11,329.64/x
  3. Step 3: Cross multiply
    20,761.16x = 28,650.30 × 11,329.64
  4. Step 4: Simplify right side
    20,761.16x = 324,597,584.89
  5. Step 5: Solve for x
    x = 324,597,584.89/20,761.16
  6. Step 6: Final answer
    x = 15,634.85

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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.