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Finding the Fourth Proportional to 18,311.31, 27,466.97 and 5,161.97

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Solution

The fourth proportional to 18,311.31, 27,466.97 and 5,161.97 is: 7,742.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.31 : 27,466.97 = 5,161.97 : x
  2. Step 2: Convert to fraction form
    18,311.31/27,466.97 = 5,161.97/x
  3. Step 3: Cross multiply
    18,311.31x = 27,466.97 × 5,161.97
  4. Step 4: Simplify right side
    18,311.31x = 141,783,511.99
  5. Step 5: Solve for x
    x = 141,783,511.99/18,311.31
  6. Step 6: Final answer
    x = 7,742.95

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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.