Home / 11,128.87-16,694.96-3,231.45

Finding the Fourth Proportional to 11,128.87, 16,694.96 and 3,231.45

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Solution

The fourth proportional to 11,128.87, 16,694.96 and 3,231.45 is: 4,847.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.87 : 16,694.96 = 3,231.45 : x
  2. Step 2: Convert to fraction form
    11,128.87/16,694.96 = 3,231.45/x
  3. Step 3: Cross multiply
    11,128.87x = 16,694.96 × 3,231.45
  4. Step 4: Simplify right side
    11,128.87x = 53,948,912.33
  5. Step 5: Solve for x
    x = 53,948,912.33/11,128.87
  6. Step 6: Final answer
    x = 4,847.65

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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.