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Finding the Fourth Proportional to 18,305.88, 27,481.26 and 12,071.10

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Solution

The fourth proportional to 18,305.88, 27,481.26 and 12,071.10 is: 18,121.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.88 : 27,481.26 = 12,071.10 : x
  2. Step 2: Convert to fraction form
    18,305.88/27,481.26 = 12,071.10/x
  3. Step 3: Cross multiply
    18,305.88x = 27,481.26 × 12,071.10
  4. Step 4: Simplify right side
    18,305.88x = 331,729,037.59
  5. Step 5: Solve for x
    x = 331,729,037.59/18,305.88
  6. Step 6: Final answer
    x = 18,121.45

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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.