Home / 13,982.18-20,972.76-3,452.12

Finding the Fourth Proportional to 13,982.18, 20,972.76 and 3,452.12

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Solution

The fourth proportional to 13,982.18, 20,972.76 and 3,452.12 is: 5,178.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.18 : 20,972.76 = 3,452.12 : x
  2. Step 2: Convert to fraction form
    13,982.18/20,972.76 = 3,452.12/x
  3. Step 3: Cross multiply
    13,982.18x = 20,972.76 × 3,452.12
  4. Step 4: Simplify right side
    13,982.18x = 72,400,459.65
  5. Step 5: Solve for x
    x = 72,400,459.65/13,982.18
  6. Step 6: Final answer
    x = 5,178.05

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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.