Home / 12,679.39-17,491.66-8,204.58

Finding the Fourth Proportional to 12,679.39, 17,491.66 and 8,204.58

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Solution

The fourth proportional to 12,679.39, 17,491.66 and 8,204.58 is: 11,318.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.39 : 17,491.66 = 8,204.58 : x
  2. Step 2: Convert to fraction form
    12,679.39/17,491.66 = 8,204.58/x
  3. Step 3: Cross multiply
    12,679.39x = 17,491.66 × 8,204.58
  4. Step 4: Simplify right side
    12,679.39x = 143,511,723.80
  5. Step 5: Solve for x
    x = 143,511,723.80/12,679.39
  6. Step 6: Final answer
    x = 11,318.50

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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.