Home / 11,954.25-16,481.70-8,172

Finding the Fourth Proportional to 11,954.25, 16,481.70 and 8,172

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Solution

The fourth proportional to 11,954.25, 16,481.70 and 8,172 is: 11,266.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,954.25 : 16,481.70 = 8,172 : x
  2. Step 2: Convert to fraction form
    11,954.25/16,481.70 = 8,172/x
  3. Step 3: Cross multiply
    11,954.25x = 16,481.70 × 8,172
  4. Step 4: Simplify right side
    11,954.25x = 134,688,452.40
  5. Step 5: Solve for x
    x = 134,688,452.40/11,954.25
  6. Step 6: Final answer
    x = 11,266.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.