Home / 13,829.12-20,743.58-3,440.88

Finding the Fourth Proportional to 13,829.12, 20,743.58 and 3,440.88

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Solution

The fourth proportional to 13,829.12, 20,743.58 and 3,440.88 is: 5,161.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,829.12 : 20,743.58 = 3,440.88 : x
  2. Step 2: Convert to fraction form
    13,829.12/20,743.58 = 3,440.88/x
  3. Step 3: Cross multiply
    13,829.12x = 20,743.58 × 3,440.88
  4. Step 4: Simplify right side
    13,829.12x = 71,376,169.55
  5. Step 5: Solve for x
    x = 71,376,169.55/13,829.12
  6. Step 6: Final answer
    x = 5,161.30

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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.