Home / 11,149.62-15,386.46-6,433.91

Finding the Fourth Proportional to 11,149.62, 15,386.46 and 6,433.91

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Solution

The fourth proportional to 11,149.62, 15,386.46 and 6,433.91 is: 8,878.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,149.62 : 15,386.46 = 6,433.91 : x
  2. Step 2: Convert to fraction form
    11,149.62/15,386.46 = 6,433.91/x
  3. Step 3: Cross multiply
    11,149.62x = 15,386.46 × 6,433.91
  4. Step 4: Simplify right side
    11,149.62x = 98,995,021.93
  5. Step 5: Solve for x
    x = 98,995,021.93/11,149.62
  6. Step 6: Final answer
    x = 8,878.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.