Home / 13,198.85-19,837.00-10,991.80

Finding the Fourth Proportional to 13,198.85, 19,837.00 and 10,991.80

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Solution

The fourth proportional to 13,198.85, 19,837.00 and 10,991.80 is: 16,519.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.85 : 19,837.00 = 10,991.80 : x
  2. Step 2: Convert to fraction form
    13,198.85/19,837.00 = 10,991.80/x
  3. Step 3: Cross multiply
    13,198.85x = 19,837.00 × 10,991.80
  4. Step 4: Simplify right side
    13,198.85x = 218,044,375.14
  5. Step 5: Solve for x
    x = 218,044,375.14/13,198.85
  6. Step 6: Final answer
    x = 16,519.95

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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.