Home / 11,721.14-17,581.76-4,321.80

Finding the Fourth Proportional to 11,721.14, 17,581.76 and 4,321.80

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Solution

The fourth proportional to 11,721.14, 17,581.76 and 4,321.80 is: 6,482.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.14 : 17,581.76 = 4,321.80 : x
  2. Step 2: Convert to fraction form
    11,721.14/17,581.76 = 4,321.80/x
  3. Step 3: Cross multiply
    11,721.14x = 17,581.76 × 4,321.80
  4. Step 4: Simplify right side
    11,721.14x = 75,984,850.37
  5. Step 5: Solve for x
    x = 75,984,850.37/11,721.14
  6. Step 6: Final answer
    x = 6,482.72

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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.