Home / 19,991.82-29,949.57-11,200.14

Finding the Fourth Proportional to 19,991.82, 29,949.57 and 11,200.14

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Solution

The fourth proportional to 19,991.82, 29,949.57 and 11,200.14 is: 16,778.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.82 : 29,949.57 = 11,200.14 : x
  2. Step 2: Convert to fraction form
    19,991.82/29,949.57 = 11,200.14/x
  3. Step 3: Cross multiply
    19,991.82x = 29,949.57 × 11,200.14
  4. Step 4: Simplify right side
    19,991.82x = 335,439,376.94
  5. Step 5: Solve for x
    x = 335,439,376.94/19,991.82
  6. Step 6: Final answer
    x = 16,778.83

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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.