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Finding the Fourth Proportional to 12,664,843.70, 17,479,360.17 and 8,019,060.55

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Solution

The fourth proportional to 12,664,843.70, 17,479,360.17 and 8,019,060.55 is: 11,067,491.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664,843.70 : 17,479,360.17 = 8,019,060.55 : x
  2. Step 2: Convert to fraction form
    12,664,843.70/17,479,360.17 = 8,019,060.55/x
  3. Step 3: Cross multiply
    12,664,843.70x = 17,479,360.17 × 8,019,060.55
  4. Step 4: Simplify right side
    12,664,843.70x = 140,168,047,534,789.91
  5. Step 5: Solve for x
    x = 140,168,047,534,789.91/12,664,843.70
  6. Step 6: Final answer
    x = 11,067,491.31

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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.