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Finding the Fourth Proportional to 26,397, 39,603.60 and 8,879.40

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Solution

The fourth proportional to 26,397, 39,603.60 and 8,879.40 is: 13,321.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,397 : 39,603.60 = 8,879.40 : x
  2. Step 2: Convert to fraction form
    26,397/39,603.60 = 8,879.40/x
  3. Step 3: Cross multiply
    26,397x = 39,603.60 × 8,879.40
  4. Step 4: Simplify right side
    26,397x = 351,656,205.84
  5. Step 5: Solve for x
    x = 351,656,205.84/26,397
  6. Step 6: Final answer
    x = 13,321.82

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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.