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Finding the Fourth Proportional to 11,391.60, 15,714.09 and 6,674.97

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Solution

The fourth proportional to 11,391.60, 15,714.09 and 6,674.97 is: 9,207.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.60 : 15,714.09 = 6,674.97 : x
  2. Step 2: Convert to fraction form
    11,391.60/15,714.09 = 6,674.97/x
  3. Step 3: Cross multiply
    11,391.60x = 15,714.09 × 6,674.97
  4. Step 4: Simplify right side
    11,391.60x = 104,891,079.33
  5. Step 5: Solve for x
    x = 104,891,079.33/11,391.60
  6. Step 6: Final answer
    x = 9,207.76

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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.