Home / 13,829.10-20,743.78-3,440.85

Finding the Fourth Proportional to 13,829.10, 20,743.78 and 3,440.85

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Solution

The fourth proportional to 13,829.10, 20,743.78 and 3,440.85 is: 5,161.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,829.10 : 20,743.78 = 3,440.85 : x
  2. Step 2: Convert to fraction form
    13,829.10/20,743.78 = 3,440.85/x
  3. Step 3: Cross multiply
    13,829.10x = 20,743.78 × 3,440.85
  4. Step 4: Simplify right side
    13,829.10x = 71,376,235.41
  5. Step 5: Solve for x
    x = 71,376,235.41/13,829.10
  6. Step 6: Final answer
    x = 5,161.31

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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.