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Finding the Fourth Proportional to 12,901.11, 17,800.83 and 8,431.43

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Solution

The fourth proportional to 12,901.11, 17,800.83 and 8,431.43 is: 11,633.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.11 : 17,800.83 = 8,431.43 : x
  2. Step 2: Convert to fraction form
    12,901.11/17,800.83 = 8,431.43/x
  3. Step 3: Cross multiply
    12,901.11x = 17,800.83 × 8,431.43
  4. Step 4: Simplify right side
    12,901.11x = 150,086,452.09
  5. Step 5: Solve for x
    x = 150,086,452.09/12,901.11
  6. Step 6: Final answer
    x = 11,633.61

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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.