Home / 13,982.82-20,974.59-4,122.45

Finding the Fourth Proportional to 13,982.82, 20,974.59 and 4,122.45

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Solution

The fourth proportional to 13,982.82, 20,974.59 and 4,122.45 is: 6,183.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.82 : 20,974.59 = 4,122.45 : x
  2. Step 2: Convert to fraction form
    13,982.82/20,974.59 = 4,122.45/x
  3. Step 3: Cross multiply
    13,982.82x = 20,974.59 × 4,122.45
  4. Step 4: Simplify right side
    13,982.82x = 86,466,698.55
  5. Step 5: Solve for x
    x = 86,466,698.55/13,982.82
  6. Step 6: Final answer
    x = 6,183.78

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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.