Home / 20,589.88-28,414.05-11,158.44

Finding the Fourth Proportional to 20,589.88, 28,414.05 and 11,158.44

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Solution

The fourth proportional to 20,589.88, 28,414.05 and 11,158.44 is: 15,398.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589.88 : 28,414.05 = 11,158.44 : x
  2. Step 2: Convert to fraction form
    20,589.88/28,414.05 = 11,158.44/x
  3. Step 3: Cross multiply
    20,589.88x = 28,414.05 × 11,158.44
  4. Step 4: Simplify right side
    20,589.88x = 317,056,428.94
  5. Step 5: Solve for x
    x = 317,056,428.94/20,589.88
  6. Step 6: Final answer
    x = 15,398.66

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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.