Home / 11,105.24-15,326.62-6,391.04

Finding the Fourth Proportional to 11,105.24, 15,326.62 and 6,391.04

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Solution

The fourth proportional to 11,105.24, 15,326.62 and 6,391.04 is: 8,820.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.24 : 15,326.62 = 6,391.04 : x
  2. Step 2: Convert to fraction form
    11,105.24/15,326.62 = 6,391.04/x
  3. Step 3: Cross multiply
    11,105.24x = 15,326.62 × 6,391.04
  4. Step 4: Simplify right side
    11,105.24x = 97,952,948.87
  5. Step 5: Solve for x
    x = 97,952,948.87/11,105.24
  6. Step 6: Final answer
    x = 8,820.43

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1.5x scale

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.