Home / 13,121.68-19,664.10-7,183.30

Finding the Fourth Proportional to 13,121.68, 19,664.10 and 7,183.30

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Solution

The fourth proportional to 13,121.68, 19,664.10 and 7,183.30 is: 10,764.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.68 : 19,664.10 = 7,183.30 : x
  2. Step 2: Convert to fraction form
    13,121.68/19,664.10 = 7,183.30/x
  3. Step 3: Cross multiply
    13,121.68x = 19,664.10 × 7,183.30
  4. Step 4: Simplify right side
    13,121.68x = 141,253,129.53
  5. Step 5: Solve for x
    x = 141,253,129.53/13,121.68
  6. Step 6: Final answer
    x = 10,764.87

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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.