Home / 26,136.60-39,139.20-20,297.28

Finding the Fourth Proportional to 26,136.60, 39,139.20 and 20,297.28

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Solution

The fourth proportional to 26,136.60, 39,139.20 and 20,297.28 is: 30,394.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,136.60 : 39,139.20 = 20,297.28 : x
  2. Step 2: Convert to fraction form
    26,136.60/39,139.20 = 20,297.28/x
  3. Step 3: Cross multiply
    26,136.60x = 39,139.20 × 20,297.28
  4. Step 4: Simplify right side
    26,136.60x = 794,419,301.38
  5. Step 5: Solve for x
    x = 794,419,301.38/26,136.60
  6. Step 6: Final answer
    x = 30,394.90

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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.