Home / 11,921.66-17,882.49-4,130.46

Finding the Fourth Proportional to 11,921.66, 17,882.49 and 4,130.46

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Solution

The fourth proportional to 11,921.66, 17,882.49 and 4,130.46 is: 6,195.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.66 : 17,882.49 = 4,130.46 : x
  2. Step 2: Convert to fraction form
    11,921.66/17,882.49 = 4,130.46/x
  3. Step 3: Cross multiply
    11,921.66x = 17,882.49 × 4,130.46
  4. Step 4: Simplify right side
    11,921.66x = 73,862,909.65
  5. Step 5: Solve for x
    x = 73,862,909.65/11,921.66
  6. Step 6: Final answer
    x = 6,195.69

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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.