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Finding the Fourth Proportional to 13,842.96, 20,764.48 and 3,454.70

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Solution

The fourth proportional to 13,842.96, 20,764.48 and 3,454.70 is: 5,182.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,842.96 : 20,764.48 = 3,454.70 : x
  2. Step 2: Convert to fraction form
    13,842.96/20,764.48 = 3,454.70/x
  3. Step 3: Cross multiply
    13,842.96x = 20,764.48 × 3,454.70
  4. Step 4: Simplify right side
    13,842.96x = 71,735,049.06
  5. Step 5: Solve for x
    x = 71,735,049.06/13,842.96
  6. Step 6: Final answer
    x = 5,182.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.