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Finding the Fourth Proportional to 12,598,896.90, 18,901,844.55 and 5,413,872.90

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Solution

The fourth proportional to 12,598,896.90, 18,901,844.55 and 5,413,872.90 is: 8,122,312.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,598,896.90 : 18,901,844.55 = 5,413,872.90 : x
  2. Step 2: Convert to fraction form
    12,598,896.90/18,901,844.55 = 5,413,872.90/x
  3. Step 3: Cross multiply
    12,598,896.90x = 18,901,844.55 × 5,413,872.90
  4. Step 4: Simplify right side
    12,598,896.90x = 102,332,183,969,257.70
  5. Step 5: Solve for x
    x = 102,332,183,969,257.70/12,598,896.90
  6. Step 6: Final answer
    x = 8,122,312.99

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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.