Home / 12,086.08-18,129.12-3,883.84

Finding the Fourth Proportional to 12,086.08, 18,129.12 and 3,883.84

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Solution

The fourth proportional to 12,086.08, 18,129.12 and 3,883.84 is: 5,825.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,086.08 : 18,129.12 = 3,883.84 : x
  2. Step 2: Convert to fraction form
    12,086.08/18,129.12 = 3,883.84/x
  3. Step 3: Cross multiply
    12,086.08x = 18,129.12 × 3,883.84
  4. Step 4: Simplify right side
    12,086.08x = 70,410,601.42
  5. Step 5: Solve for x
    x = 70,410,601.42/12,086.08
  6. Step 6: Final answer
    x = 5,825.76

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Half scale
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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.