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Finding the Fourth Proportional to 11,662.11, 16,099.16 and 7,472.79

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Solution

The fourth proportional to 11,662.11, 16,099.16 and 7,472.79 is: 10,315.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,662.11 : 16,099.16 = 7,472.79 : x
  2. Step 2: Convert to fraction form
    11,662.11/16,099.16 = 7,472.79/x
  3. Step 3: Cross multiply
    11,662.11x = 16,099.16 × 7,472.79
  4. Step 4: Simplify right side
    11,662.11x = 120,305,604.49
  5. Step 5: Solve for x
    x = 120,305,604.49/11,662.11
  6. Step 6: Final answer
    x = 10,315.94

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1.5x scale

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.