Home / 11,187.12-16,780.32-3,791.52

Finding the Fourth Proportional to 11,187.12, 16,780.32 and 3,791.52

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Solution

The fourth proportional to 11,187.12, 16,780.32 and 3,791.52 is: 5,687.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.12 : 16,780.32 = 3,791.52 : x
  2. Step 2: Convert to fraction form
    11,187.12/16,780.32 = 3,791.52/x
  3. Step 3: Cross multiply
    11,187.12x = 16,780.32 × 3,791.52
  4. Step 4: Simplify right side
    11,187.12x = 63,622,918.89
  5. Step 5: Solve for x
    x = 63,622,918.89/11,187.12
  6. Step 6: Final answer
    x = 5,687.16

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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.