Home / 13,147.92-19,721.48-3,287.12

Finding the Fourth Proportional to 13,147.92, 19,721.48 and 3,287.12

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Solution

The fourth proportional to 13,147.92, 19,721.48 and 3,287.12 is: 4,930.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.92 : 19,721.48 = 3,287.12 : x
  2. Step 2: Convert to fraction form
    13,147.92/19,721.48 = 3,287.12/x
  3. Step 3: Cross multiply
    13,147.92x = 19,721.48 × 3,287.12
  4. Step 4: Simplify right side
    13,147.92x = 64,826,756.29
  5. Step 5: Solve for x
    x = 64,826,756.29/13,147.92
  6. Step 6: Final answer
    x = 4,930.57

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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.