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Finding the Fourth Proportional to 26,604.80, 39,820.80 and 20,729.60

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Solution

The fourth proportional to 26,604.80, 39,820.80 and 20,729.60 is: 31,027.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,604.80 : 39,820.80 = 20,729.60 : x
  2. Step 2: Convert to fraction form
    26,604.80/39,820.80 = 20,729.60/x
  3. Step 3: Cross multiply
    26,604.80x = 39,820.80 × 20,729.60
  4. Step 4: Simplify right side
    26,604.80x = 825,469,255.68
  5. Step 5: Solve for x
    x = 825,469,255.68/26,604.80
  6. Step 6: Final answer
    x = 31,027.08

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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.