Home / 13,747.20-20,621.12-3,359.04

Finding the Fourth Proportional to 13,747.20, 20,621.12 and 3,359.04

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Solution

The fourth proportional to 13,747.20, 20,621.12 and 3,359.04 is: 5,038.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.20 : 20,621.12 = 3,359.04 : x
  2. Step 2: Convert to fraction form
    13,747.20/20,621.12 = 3,359.04/x
  3. Step 3: Cross multiply
    13,747.20x = 20,621.12 × 3,359.04
  4. Step 4: Simplify right side
    13,747.20x = 69,267,166.92
  5. Step 5: Solve for x
    x = 69,267,166.92/13,747.20
  6. Step 6: Final answer
    x = 5,038.64

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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.