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Finding the Fourth Proportional to 12,212.96, 18,199.14 and 11,816.48

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Solution

The fourth proportional to 12,212.96, 18,199.14 and 11,816.48 is: 17,608.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.96 : 18,199.14 = 11,816.48 : x
  2. Step 2: Convert to fraction form
    12,212.96/18,199.14 = 11,816.48/x
  3. Step 3: Cross multiply
    12,212.96x = 18,199.14 × 11,816.48
  4. Step 4: Simplify right side
    12,212.96x = 215,049,773.83
  5. Step 5: Solve for x
    x = 215,049,773.83/12,212.96
  6. Step 6: Final answer
    x = 17,608.33

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.