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Finding the Fourth Proportional to 26,791.80, 40,206.90 and 11,220.60

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Solution

The fourth proportional to 26,791.80, 40,206.90 and 11,220.60 is: 16,838.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,791.80 : 40,206.90 = 11,220.60 : x
  2. Step 2: Convert to fraction form
    26,791.80/40,206.90 = 11,220.60/x
  3. Step 3: Cross multiply
    26,791.80x = 40,206.90 × 11,220.60
  4. Step 4: Simplify right side
    26,791.80x = 451,145,542.14
  5. Step 5: Solve for x
    x = 451,145,542.14/26,791.80
  6. Step 6: Final answer
    x = 16,838.94

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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.