Home / 12,170.94-18,256.41-4,379.55

Finding the Fourth Proportional to 12,170.94, 18,256.41 and 4,379.55

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Solution

The fourth proportional to 12,170.94, 18,256.41 and 4,379.55 is: 6,569.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.94 : 18,256.41 = 4,379.55 : x
  2. Step 2: Convert to fraction form
    12,170.94/18,256.41 = 4,379.55/x
  3. Step 3: Cross multiply
    12,170.94x = 18,256.41 × 4,379.55
  4. Step 4: Simplify right side
    12,170.94x = 79,954,860.42
  5. Step 5: Solve for x
    x = 79,954,860.42/12,170.94
  6. Step 6: Final answer
    x = 6,569.33

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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.