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Finding the Fourth Proportional to 12,400.98, 18,601.46 and 3,166.98

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Solution

The fourth proportional to 12,400.98, 18,601.46 and 3,166.98 is: 4,750.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.98 : 18,601.46 = 3,166.98 : x
  2. Step 2: Convert to fraction form
    12,400.98/18,601.46 = 3,166.98/x
  3. Step 3: Cross multiply
    12,400.98x = 18,601.46 × 3,166.98
  4. Step 4: Simplify right side
    12,400.98x = 58,910,435.96
  5. Step 5: Solve for x
    x = 58,910,435.96/12,400.98
  6. Step 6: Final answer
    x = 4,750.47

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Double scale
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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.