Home / 18,936.88-28,409.42-7,250.09

Finding the Fourth Proportional to 18,936.88, 28,409.42 and 7,250.09

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Solution

The fourth proportional to 18,936.88, 28,409.42 and 7,250.09 is: 10,876.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.88 : 28,409.42 = 7,250.09 : x
  2. Step 2: Convert to fraction form
    18,936.88/28,409.42 = 7,250.09/x
  3. Step 3: Cross multiply
    18,936.88x = 28,409.42 × 7,250.09
  4. Step 4: Simplify right side
    18,936.88x = 205,970,851.85
  5. Step 5: Solve for x
    x = 205,970,851.85/18,936.88
  6. Step 6: Final answer
    x = 10,876.70

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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.