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Finding the Fourth Proportional to 22,439.44, 30,966.32 and 12,230.45

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Solution

The fourth proportional to 22,439.44, 30,966.32 and 12,230.45 is: 16,877.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,439.44 : 30,966.32 = 12,230.45 : x
  2. Step 2: Convert to fraction form
    22,439.44/30,966.32 = 12,230.45/x
  3. Step 3: Cross multiply
    22,439.44x = 30,966.32 × 12,230.45
  4. Step 4: Simplify right side
    22,439.44x = 378,732,136.44
  5. Step 5: Solve for x
    x = 378,732,136.44/22,439.44
  6. Step 6: Final answer
    x = 16,877.97

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.