Home / 11,187.18-16,779.61-3,791.45

Finding the Fourth Proportional to 11,187.18, 16,779.61 and 3,791.45

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Solution

The fourth proportional to 11,187.18, 16,779.61 and 3,791.45 is: 5,686.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.18 : 16,779.61 = 3,791.45 : x
  2. Step 2: Convert to fraction form
    11,187.18/16,779.61 = 3,791.45/x
  3. Step 3: Cross multiply
    11,187.18x = 16,779.61 × 3,791.45
  4. Step 4: Simplify right side
    11,187.18x = 63,618,949.48
  5. Step 5: Solve for x
    x = 63,618,949.48/11,187.18
  6. Step 6: Final answer
    x = 5,686.78

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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.