Home / 28,786.20-43,190.10-11,268.60

Finding the Fourth Proportional to 28,786.20, 43,190.10 and 11,268.60

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Solution

The fourth proportional to 28,786.20, 43,190.10 and 11,268.60 is: 16,907.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,786.20 : 43,190.10 = 11,268.60 : x
  2. Step 2: Convert to fraction form
    28,786.20/43,190.10 = 11,268.60/x
  3. Step 3: Cross multiply
    28,786.20x = 43,190.10 × 11,268.60
  4. Step 4: Simplify right side
    28,786.20x = 486,691,960.86
  5. Step 5: Solve for x
    x = 486,691,960.86/28,786.20
  6. Step 6: Final answer
    x = 16,907.13

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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.