Home / 13,942.28-20,913.99-4,081.56

Finding the Fourth Proportional to 13,942.28, 20,913.99 and 4,081.56

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Solution

The fourth proportional to 13,942.28, 20,913.99 and 4,081.56 is: 6,122.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.28 : 20,913.99 = 4,081.56 : x
  2. Step 2: Convert to fraction form
    13,942.28/20,913.99 = 4,081.56/x
  3. Step 3: Cross multiply
    13,942.28x = 20,913.99 × 4,081.56
  4. Step 4: Simplify right side
    13,942.28x = 85,361,705.02
  5. Step 5: Solve for x
    x = 85,361,705.02/13,942.28
  6. Step 6: Final answer
    x = 6,122.51

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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.