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Finding the Fourth Proportional to 11,961.75, 18,054.98 and 11,961.75

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Solution

The fourth proportional to 11,961.75, 18,054.98 and 11,961.75 is: 18,054.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,961.75 : 18,054.98 = 11,961.75 : x
  2. Step 2: Convert to fraction form
    11,961.75/18,054.98 = 11,961.75/x
  3. Step 3: Cross multiply
    11,961.75x = 18,054.98 × 11,961.75
  4. Step 4: Simplify right side
    11,961.75x = 215,969,067.02
  5. Step 5: Solve for x
    x = 215,969,067.02/11,961.75
  6. Step 6: Final answer
    x = 18,054.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.