Home / 12,126.96-18,194.88-5,108.73

Finding the Fourth Proportional to 12,126.96, 18,194.88 and 5,108.73

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Solution

The fourth proportional to 12,126.96, 18,194.88 and 5,108.73 is: 7,664.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.96 : 18,194.88 = 5,108.73 : x
  2. Step 2: Convert to fraction form
    12,126.96/18,194.88 = 5,108.73/x
  3. Step 3: Cross multiply
    12,126.96x = 18,194.88 × 5,108.73
  4. Step 4: Simplify right side
    12,126.96x = 92,952,729.30
  5. Step 5: Solve for x
    x = 92,952,729.30/12,126.96
  6. Step 6: Final answer
    x = 7,664.97

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Double scale
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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.