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Finding the Fourth Proportional to 11,589.75, 15,995.88 and 6,874.34

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Solution

The fourth proportional to 11,589.75, 15,995.88 and 6,874.34 is: 9,487.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,589.75 : 15,995.88 = 6,874.34 : x
  2. Step 2: Convert to fraction form
    11,589.75/15,995.88 = 6,874.34/x
  3. Step 3: Cross multiply
    11,589.75x = 15,995.88 × 6,874.34
  4. Step 4: Simplify right side
    11,589.75x = 109,961,037.74
  5. Step 5: Solve for x
    x = 109,961,037.74/11,589.75
  6. Step 6: Final answer
    x = 9,487.78

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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.