Home / 20,997.41-28,976.79-11,565.95

Finding the Fourth Proportional to 20,997.41, 28,976.79 and 11,565.95

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Solution

The fourth proportional to 20,997.41, 28,976.79 and 11,565.95 is: 15,961.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.41 : 28,976.79 = 11,565.95 : x
  2. Step 2: Convert to fraction form
    20,997.41/28,976.79 = 11,565.95/x
  3. Step 3: Cross multiply
    20,997.41x = 28,976.79 × 11,565.95
  4. Step 4: Simplify right side
    20,997.41x = 335,144,104.30
  5. Step 5: Solve for x
    x = 335,144,104.30/20,997.41
  6. Step 6: Final answer
    x = 15,961.21

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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.