Home / 11,209.96-16,815.23-3,418.75

Finding the Fourth Proportional to 11,209.96, 16,815.23 and 3,418.75

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Solution

The fourth proportional to 11,209.96, 16,815.23 and 3,418.75 is: 5,128.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.96 : 16,815.23 = 3,418.75 : x
  2. Step 2: Convert to fraction form
    11,209.96/16,815.23 = 3,418.75/x
  3. Step 3: Cross multiply
    11,209.96x = 16,815.23 × 3,418.75
  4. Step 4: Simplify right side
    11,209.96x = 57,487,067.56
  5. Step 5: Solve for x
    x = 57,487,067.56/11,209.96
  6. Step 6: Final answer
    x = 5,128.21

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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.