Home / 10,121.22-15,195.81-6,993.90

Finding the Fourth Proportional to 10,121.22, 15,195.81 and 6,993.90

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Solution

The fourth proportional to 10,121.22, 15,195.81 and 6,993.90 is: 10,500.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.22 : 15,195.81 = 6,993.90 : x
  2. Step 2: Convert to fraction form
    10,121.22/15,195.81 = 6,993.90/x
  3. Step 3: Cross multiply
    10,121.22x = 15,195.81 × 6,993.90
  4. Step 4: Simplify right side
    10,121.22x = 106,277,975.56
  5. Step 5: Solve for x
    x = 106,277,975.56/10,121.22
  6. Step 6: Final answer
    x = 10,500.51

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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.