Home / 20,551.28-30,837.72-11,198

Finding the Fourth Proportional to 20,551.28, 30,837.72 and 11,198

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Solution

The fourth proportional to 20,551.28, 30,837.72 and 11,198 is: 16,802.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.28 : 30,837.72 = 11,198 : x
  2. Step 2: Convert to fraction form
    20,551.28/30,837.72 = 11,198/x
  3. Step 3: Cross multiply
    20,551.28x = 30,837.72 × 11,198
  4. Step 4: Simplify right side
    20,551.28x = 345,320,788.56
  5. Step 5: Solve for x
    x = 345,320,788.56/20,551.28
  6. Step 6: Final answer
    x = 16,802.88

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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.