Home / 18,768.69-28,153.01-11,375.26

Finding the Fourth Proportional to 18,768.69, 28,153.01 and 11,375.26

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Solution

The fourth proportional to 18,768.69, 28,153.01 and 11,375.26 is: 17,062.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.69 : 28,153.01 = 11,375.26 : x
  2. Step 2: Convert to fraction form
    18,768.69/28,153.01 = 11,375.26/x
  3. Step 3: Cross multiply
    18,768.69x = 28,153.01 × 11,375.26
  4. Step 4: Simplify right side
    18,768.69x = 320,247,766.59
  5. Step 5: Solve for x
    x = 320,247,766.59/18,768.69
  6. Step 6: Final answer
    x = 17,062.87

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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.