Home / 12,185.98-18,278.96-4,394.79

Finding the Fourth Proportional to 12,185.98, 18,278.96 and 4,394.79

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Solution

The fourth proportional to 12,185.98, 18,278.96 and 4,394.79 is: 6,592.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,185.98 : 18,278.96 = 4,394.79 : x
  2. Step 2: Convert to fraction form
    12,185.98/18,278.96 = 4,394.79/x
  3. Step 3: Cross multiply
    12,185.98x = 18,278.96 × 4,394.79
  4. Step 4: Simplify right side
    12,185.98x = 80,332,099.22
  5. Step 5: Solve for x
    x = 80,332,099.22/12,185.98
  6. Step 6: Final answer
    x = 6,592.18

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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.