Home / 13,356.20-20,034.30-4,122.20

Finding the Fourth Proportional to 13,356.20, 20,034.30 and 4,122.20

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Solution

The fourth proportional to 13,356.20, 20,034.30 and 4,122.20 is: 6,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.20 : 20,034.30 = 4,122.20 : x
  2. Step 2: Convert to fraction form
    13,356.20/20,034.30 = 4,122.20/x
  3. Step 3: Cross multiply
    13,356.20x = 20,034.30 × 4,122.20
  4. Step 4: Simplify right side
    13,356.20x = 82,585,391.46
  5. Step 5: Solve for x
    x = 82,585,391.46/13,356.20
  6. Step 6: Final answer
    x = 6,183.30

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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.