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Finding the Fourth Proportional to 18,486.47, 27,754.21 and 11,003.89

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Solution

The fourth proportional to 18,486.47, 27,754.21 and 11,003.89 is: 16,520.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.47 : 27,754.21 = 11,003.89 : x
  2. Step 2: Convert to fraction form
    18,486.47/27,754.21 = 11,003.89/x
  3. Step 3: Cross multiply
    18,486.47x = 27,754.21 × 11,003.89
  4. Step 4: Simplify right side
    18,486.47x = 305,404,273.88
  5. Step 5: Solve for x
    x = 305,404,273.88/18,486.47
  6. Step 6: Final answer
    x = 16,520.42

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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.