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Finding the Fourth Proportional to 12,400.84, 18,601.28 and 3,166.84

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Solution

The fourth proportional to 12,400.84, 18,601.28 and 3,166.84 is: 4,750.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.84 : 18,601.28 = 3,166.84 : x
  2. Step 2: Convert to fraction form
    12,400.84/18,601.28 = 3,166.84/x
  3. Step 3: Cross multiply
    12,400.84x = 18,601.28 × 3,166.84
  4. Step 4: Simplify right side
    12,400.84x = 58,907,277.56
  5. Step 5: Solve for x
    x = 58,907,277.56/12,400.84
  6. Step 6: Final answer
    x = 4,750.27

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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.