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Finding the Fourth Proportional to 12,221.73, 16,873.64 and 8,399.96

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Solution

The fourth proportional to 12,221.73, 16,873.64 and 8,399.96 is: 11,597.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.73 : 16,873.64 = 8,399.96 : x
  2. Step 2: Convert to fraction form
    12,221.73/16,873.64 = 8,399.96/x
  3. Step 3: Cross multiply
    12,221.73x = 16,873.64 × 8,399.96
  4. Step 4: Simplify right side
    12,221.73x = 141,737,774.69
  5. Step 5: Solve for x
    x = 141,737,774.69/12,221.73
  6. Step 6: Final answer
    x = 11,597.19

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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.