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Finding the Fourth Proportional to 13,389, 20,083.38 and 4,028.97

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Solution

The fourth proportional to 13,389, 20,083.38 and 4,028.97 is: 6,043.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389 : 20,083.38 = 4,028.97 : x
  2. Step 2: Convert to fraction form
    13,389/20,083.38 = 4,028.97/x
  3. Step 3: Cross multiply
    13,389x = 20,083.38 × 4,028.97
  4. Step 4: Simplify right side
    13,389x = 80,915,335.52
  5. Step 5: Solve for x
    x = 80,915,335.52/13,389
  6. Step 6: Final answer
    x = 6,043.42

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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.