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Finding the Fourth Proportional to 18,243.98, 27,355.01 and 7,137.44

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Solution

The fourth proportional to 18,243.98, 27,355.01 and 7,137.44 is: 10,701.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,243.98 : 27,355.01 = 7,137.44 : x
  2. Step 2: Convert to fraction form
    18,243.98/27,355.01 = 7,137.44/x
  3. Step 3: Cross multiply
    18,243.98x = 27,355.01 × 7,137.44
  4. Step 4: Simplify right side
    18,243.98x = 195,244,775.27
  5. Step 5: Solve for x
    x = 195,244,775.27/18,243.98
  6. Step 6: Final answer
    x = 10,701.87

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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.