Home / 18,719.03-28,064.49-11,321.97

Finding the Fourth Proportional to 18,719.03, 28,064.49 and 11,321.97

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Solution

The fourth proportional to 18,719.03, 28,064.49 and 11,321.97 is: 16,974.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.03 : 28,064.49 = 11,321.97 : x
  2. Step 2: Convert to fraction form
    18,719.03/28,064.49 = 11,321.97/x
  3. Step 3: Cross multiply
    18,719.03x = 28,064.49 × 11,321.97
  4. Step 4: Simplify right side
    18,719.03x = 317,745,313.85
  5. Step 5: Solve for x
    x = 317,745,313.85/18,719.03
  6. Step 6: Final answer
    x = 16,974.46

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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.