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Finding the Fourth Proportional to 26,605.75, 39,908.64 and 8,137.75

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Solution

The fourth proportional to 26,605.75, 39,908.64 and 8,137.75 is: 12,206.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,605.75 : 39,908.64 = 8,137.75 : x
  2. Step 2: Convert to fraction form
    26,605.75/39,908.64 = 8,137.75/x
  3. Step 3: Cross multiply
    26,605.75x = 39,908.64 × 8,137.75
  4. Step 4: Simplify right side
    26,605.75x = 324,766,535.16
  5. Step 5: Solve for x
    x = 324,766,535.16/26,605.75
  6. Step 6: Final answer
    x = 12,206.63

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1.5x scale

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.