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Finding the Fourth Proportional to 18,105.81, 27,101.89 and 12,450.48

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Solution

The fourth proportional to 18,105.81, 27,101.89 and 12,450.48 is: 18,636.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.81 : 27,101.89 = 12,450.48 : x
  2. Step 2: Convert to fraction form
    18,105.81/27,101.89 = 12,450.48/x
  3. Step 3: Cross multiply
    18,105.81x = 27,101.89 × 12,450.48
  4. Step 4: Simplify right side
    18,105.81x = 337,431,539.41
  5. Step 5: Solve for x
    x = 337,431,539.41/18,105.81
  6. Step 6: Final answer
    x = 18,636.64

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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.