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Finding the Fourth Proportional to 11,491.03, 15,843.09 and 7,505.83

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Solution

The fourth proportional to 11,491.03, 15,843.09 and 7,505.83 is: 10,348.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,491.03 : 15,843.09 = 7,505.83 : x
  2. Step 2: Convert to fraction form
    11,491.03/15,843.09 = 7,505.83/x
  3. Step 3: Cross multiply
    11,491.03x = 15,843.09 × 7,505.83
  4. Step 4: Simplify right side
    11,491.03x = 118,915,540.21
  5. Step 5: Solve for x
    x = 118,915,540.21/11,491.03
  6. Step 6: Final answer
    x = 10,348.55

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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.