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Finding the Fourth Proportional to 27,620.80, 41,344.80 and 21,745.60

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Solution

The fourth proportional to 27,620.80, 41,344.80 and 21,745.60 is: 32,550.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,620.80 : 41,344.80 = 21,745.60 : x
  2. Step 2: Convert to fraction form
    27,620.80/41,344.80 = 21,745.60/x
  3. Step 3: Cross multiply
    27,620.80x = 41,344.80 × 21,745.60
  4. Step 4: Simplify right side
    27,620.80x = 899,067,482.88
  5. Step 5: Solve for x
    x = 899,067,482.88/27,620.80
  6. Step 6: Final answer
    x = 32,550.38

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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.