Home / 12,171.44-18,257.16-4,380.05

Finding the Fourth Proportional to 12,171.44, 18,257.16 and 4,380.05

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Solution

The fourth proportional to 12,171.44, 18,257.16 and 4,380.05 is: 6,570.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,171.44 : 18,257.16 = 4,380.05 : x
  2. Step 2: Convert to fraction form
    12,171.44/18,257.16 = 4,380.05/x
  3. Step 3: Cross multiply
    12,171.44x = 18,257.16 × 4,380.05
  4. Step 4: Simplify right side
    12,171.44x = 79,967,273.66
  5. Step 5: Solve for x
    x = 79,967,273.66/12,171.44
  6. Step 6: Final answer
    x = 6,570.08

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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.