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Finding the Fourth Proportional to 26,500, 39,715.92 and 20,236.96

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Solution

The fourth proportional to 26,500, 39,715.92 and 20,236.96 is: 30,329.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,500 : 39,715.92 = 20,236.96 : x
  2. Step 2: Convert to fraction form
    26,500/39,715.92 = 20,236.96/x
  3. Step 3: Cross multiply
    26,500x = 39,715.92 × 20,236.96
  4. Step 4: Simplify right side
    26,500x = 803,729,484.40
  5. Step 5: Solve for x
    x = 803,729,484.40/26,500
  6. Step 6: Final answer
    x = 30,329.41

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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.