Home / 20,581.12-28,391.61-13,504.96

Finding the Fourth Proportional to 20,581.12, 28,391.61 and 13,504.96

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Solution

The fourth proportional to 20,581.12, 28,391.61 and 13,504.96 is: 18,630.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.12 : 28,391.61 = 13,504.96 : x
  2. Step 2: Convert to fraction form
    20,581.12/28,391.61 = 13,504.96/x
  3. Step 3: Cross multiply
    20,581.12x = 28,391.61 × 13,504.96
  4. Step 4: Simplify right side
    20,581.12x = 383,427,557.39
  5. Step 5: Solve for x
    x = 383,427,557.39/20,581.12
  6. Step 6: Final answer
    x = 18,630.06

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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.