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Finding the Fourth Proportional to 26,640.73, 39,963.08 and 6,919.39

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Solution

The fourth proportional to 26,640.73, 39,963.08 and 6,919.39 is: 10,379.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,640.73 : 39,963.08 = 6,919.39 : x
  2. Step 2: Convert to fraction form
    26,640.73/39,963.08 = 6,919.39/x
  3. Step 3: Cross multiply
    26,640.73x = 39,963.08 × 6,919.39
  4. Step 4: Simplify right side
    26,640.73x = 276,520,136.12
  5. Step 5: Solve for x
    x = 276,520,136.12/26,640.73
  6. Step 6: Final answer
    x = 10,379.60

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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.