Home / 11,921.72-17,882.60-4,130.54

Finding the Fourth Proportional to 11,921.72, 17,882.60 and 4,130.54

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Solution

The fourth proportional to 11,921.72, 17,882.60 and 4,130.54 is: 6,195.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.72 : 17,882.60 = 4,130.54 : x
  2. Step 2: Convert to fraction form
    11,921.72/17,882.60 = 4,130.54/x
  3. Step 3: Cross multiply
    11,921.72x = 17,882.60 × 4,130.54
  4. Step 4: Simplify right side
    11,921.72x = 73,864,684.54
  5. Step 5: Solve for x
    x = 73,864,684.54/11,921.72
  6. Step 6: Final answer
    x = 6,195.81

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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.