Home / 20,548.82-28,355.76-12,589.97

Finding the Fourth Proportional to 20,548.82, 28,355.76 and 12,589.97

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Solution

The fourth proportional to 20,548.82, 28,355.76 and 12,589.97 is: 17,373.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548.82 : 28,355.76 = 12,589.97 : x
  2. Step 2: Convert to fraction form
    20,548.82/28,355.76 = 12,589.97/x
  3. Step 3: Cross multiply
    20,548.82x = 28,355.76 × 12,589.97
  4. Step 4: Simplify right side
    20,548.82x = 356,998,025.95
  5. Step 5: Solve for x
    x = 356,998,025.95/20,548.82
  6. Step 6: Final answer
    x = 17,373.16

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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.