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Finding the Fourth Proportional to 13,608,608.10, 20,412,912.15 and 11,246,648.10

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Solution

The fourth proportional to 13,608,608.10, 20,412,912.15 and 11,246,648.10 is: 16,869,972.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608,608.10 : 20,412,912.15 = 11,246,648.10 : x
  2. Step 2: Convert to fraction form
    13,608,608.10/20,412,912.15 = 11,246,648.10/x
  3. Step 3: Cross multiply
    13,608,608.10x = 20,412,912.15 × 11,246,648.10
  4. Step 4: Simplify right side
    13,608,608.10x = 229,576,839,647,264.41
  5. Step 5: Solve for x
    x = 229,576,839,647,264.41/13,608,608.10
  6. Step 6: Final answer
    x = 16,869,972.15

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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.