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Finding the Fourth Proportional to 12,479.66, 17,217.79 and 8,232.83

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Solution

The fourth proportional to 12,479.66, 17,217.79 and 8,232.83 is: 11,358.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.66 : 17,217.79 = 8,232.83 : x
  2. Step 2: Convert to fraction form
    12,479.66/17,217.79 = 8,232.83/x
  3. Step 3: Cross multiply
    12,479.66x = 17,217.79 × 8,232.83
  4. Step 4: Simplify right side
    12,479.66x = 141,751,138.05
  5. Step 5: Solve for x
    x = 141,751,138.05/12,479.66
  6. Step 6: Final answer
    x = 11,358.57

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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.