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Finding the Fourth Proportional to 11,908.52, 17,890.14 and 8,406.62

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Solution

The fourth proportional to 11,908.52, 17,890.14 and 8,406.62 is: 12,629.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,908.52 : 17,890.14 = 8,406.62 : x
  2. Step 2: Convert to fraction form
    11,908.52/17,890.14 = 8,406.62/x
  3. Step 3: Cross multiply
    11,908.52x = 17,890.14 × 8,406.62
  4. Step 4: Simplify right side
    11,908.52x = 150,395,608.73
  5. Step 5: Solve for x
    x = 150,395,608.73/11,908.52
  6. Step 6: Final answer
    x = 12,629.24

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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.