Home / 12,238.39-16,890.16-6,861.73

Finding the Fourth Proportional to 12,238.39, 16,890.16 and 6,861.73

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Solution

The fourth proportional to 12,238.39, 16,890.16 and 6,861.73 is: 9,469.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,238.39 : 16,890.16 = 6,861.73 : x
  2. Step 2: Convert to fraction form
    12,238.39/16,890.16 = 6,861.73/x
  3. Step 3: Cross multiply
    12,238.39x = 16,890.16 × 6,861.73
  4. Step 4: Simplify right side
    12,238.39x = 115,895,717.58
  5. Step 5: Solve for x
    x = 115,895,717.58/12,238.39
  6. Step 6: Final answer
    x = 9,469.85

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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.