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Finding the Fourth Proportional to 26,612.75, 39,919.14 and 8,144.75

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Solution

The fourth proportional to 26,612.75, 39,919.14 and 8,144.75 is: 12,217.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,612.75 : 39,919.14 = 8,144.75 : x
  2. Step 2: Convert to fraction form
    26,612.75/39,919.14 = 8,144.75/x
  3. Step 3: Cross multiply
    26,612.75x = 39,919.14 × 8,144.75
  4. Step 4: Simplify right side
    26,612.75x = 325,131,415.52
  5. Step 5: Solve for x
    x = 325,131,415.52/26,612.75
  6. Step 6: Final answer
    x = 12,217.13

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.