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Finding the Fourth Proportional to 11,650.75, 16,078.09 and 6,935.20

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Solution

The fourth proportional to 11,650.75, 16,078.09 and 6,935.20 is: 9,570.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,650.75 : 16,078.09 = 6,935.20 : x
  2. Step 2: Convert to fraction form
    11,650.75/16,078.09 = 6,935.20/x
  3. Step 3: Cross multiply
    11,650.75x = 16,078.09 × 6,935.20
  4. Step 4: Simplify right side
    11,650.75x = 111,504,769.77
  5. Step 5: Solve for x
    x = 111,504,769.77/11,650.75
  6. Step 6: Final answer
    x = 9,570.61

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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.