Home / 11,991.44-17,986.80-4,199.96

Finding the Fourth Proportional to 11,991.44, 17,986.80 and 4,199.96

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Solution

The fourth proportional to 11,991.44, 17,986.80 and 4,199.96 is: 6,299.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.44 : 17,986.80 = 4,199.96 : x
  2. Step 2: Convert to fraction form
    11,991.44/17,986.80 = 4,199.96/x
  3. Step 3: Cross multiply
    11,991.44x = 17,986.80 × 4,199.96
  4. Step 4: Simplify right side
    11,991.44x = 75,543,840.53
  5. Step 5: Solve for x
    x = 75,543,840.53/11,991.44
  6. Step 6: Final answer
    x = 6,299.81

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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.