Home / 20,589.94-28,414.22-11,158.50

Finding the Fourth Proportional to 20,589.94, 28,414.22 and 11,158.50

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Solution

The fourth proportional to 20,589.94, 28,414.22 and 11,158.50 is: 15,398.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589.94 : 28,414.22 = 11,158.50 : x
  2. Step 2: Convert to fraction form
    20,589.94/28,414.22 = 11,158.50/x
  3. Step 3: Cross multiply
    20,589.94x = 28,414.22 × 11,158.50
  4. Step 4: Simplify right side
    20,589.94x = 317,060,018.08
  5. Step 5: Solve for x
    x = 317,060,018.08/20,589.94
  6. Step 6: Final answer
    x = 15,398.78

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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.