Home / 13,942.62-20,915.76-4,081.80

Finding the Fourth Proportional to 13,942.62, 20,915.76 and 4,081.80

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Solution

The fourth proportional to 13,942.62, 20,915.76 and 4,081.80 is: 6,123.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.62 : 20,915.76 = 4,081.80 : x
  2. Step 2: Convert to fraction form
    13,942.62/20,915.76 = 4,081.80/x
  3. Step 3: Cross multiply
    13,942.62x = 20,915.76 × 4,081.80
  4. Step 4: Simplify right side
    13,942.62x = 85,373,949.17
  5. Step 5: Solve for x
    x = 85,373,949.17/13,942.62
  6. Step 6: Final answer
    x = 6,123.24

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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.