Home / 20,110.87-30,169.14-6,779.89

Finding the Fourth Proportional to 20,110.87, 30,169.14 and 6,779.89

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Solution

The fourth proportional to 20,110.87, 30,169.14 and 6,779.89 is: 10,170.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.87 : 30,169.14 = 6,779.89 : x
  2. Step 2: Convert to fraction form
    20,110.87/30,169.14 = 6,779.89/x
  3. Step 3: Cross multiply
    20,110.87x = 30,169.14 × 6,779.89
  4. Step 4: Simplify right side
    20,110.87x = 204,543,450.59
  5. Step 5: Solve for x
    x = 204,543,450.59/20,110.87
  6. Step 6: Final answer
    x = 10,170.79

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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.