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Finding the Fourth Proportional to 26,620.90, 39,935.33 and 8,603.11

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Solution

The fourth proportional to 26,620.90, 39,935.33 and 8,603.11 is: 12,905.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,620.90 : 39,935.33 = 8,603.11 : x
  2. Step 2: Convert to fraction form
    26,620.90/39,935.33 = 8,603.11/x
  3. Step 3: Cross multiply
    26,620.90x = 39,935.33 × 8,603.11
  4. Step 4: Simplify right side
    26,620.90x = 343,568,076.04
  5. Step 5: Solve for x
    x = 343,568,076.04/26,620.90
  6. Step 6: Final answer
    x = 12,905.95

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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.