Home / 13,991.31-20,990.60-6,198.27

Finding the Fourth Proportional to 13,991.31, 20,990.60 and 6,198.27

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Solution

The fourth proportional to 13,991.31, 20,990.60 and 6,198.27 is: 9,299.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.31 : 20,990.60 = 6,198.27 : x
  2. Step 2: Convert to fraction form
    13,991.31/20,990.60 = 6,198.27/x
  3. Step 3: Cross multiply
    13,991.31x = 20,990.60 × 6,198.27
  4. Step 4: Simplify right side
    13,991.31x = 130,105,375.27
  5. Step 5: Solve for x
    x = 130,105,375.27/13,991.31
  6. Step 6: Final answer
    x = 9,299.01

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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.