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Finding the Fourth Proportional to 13,358.43, 20,039.85 and 5,039.19

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Solution

The fourth proportional to 13,358.43, 20,039.85 and 5,039.19 is: 7,559.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.43 : 20,039.85 = 5,039.19 : x
  2. Step 2: Convert to fraction form
    13,358.43/20,039.85 = 5,039.19/x
  3. Step 3: Cross multiply
    13,358.43x = 20,039.85 × 5,039.19
  4. Step 4: Simplify right side
    13,358.43x = 100,984,611.72
  5. Step 5: Solve for x
    x = 100,984,611.72/13,358.43
  6. Step 6: Final answer
    x = 7,559.62

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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.