Home / 27,945.20-41,917.80-13,907.90

Finding the Fourth Proportional to 27,945.20, 41,917.80 and 13,907.90

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Solution

The fourth proportional to 27,945.20, 41,917.80 and 13,907.90 is: 20,861.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,945.20 : 41,917.80 = 13,907.90 : x
  2. Step 2: Convert to fraction form
    27,945.20/41,917.80 = 13,907.90/x
  3. Step 3: Cross multiply
    27,945.20x = 41,917.80 × 13,907.90
  4. Step 4: Simplify right side
    27,945.20x = 582,988,570.62
  5. Step 5: Solve for x
    x = 582,988,570.62/27,945.20
  6. Step 6: Final answer
    x = 20,861.85

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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.