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Finding the Fourth Proportional to 11,868,019.60, 17,800,992.60 and 3,889,843.60

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Solution

The fourth proportional to 11,868,019.60, 17,800,992.60 and 3,889,843.60 is: 5,834,425.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,868,019.60 : 17,800,992.60 = 3,889,843.60 : x
  2. Step 2: Convert to fraction form
    11,868,019.60/17,800,992.60 = 3,889,843.60/x
  3. Step 3: Cross multiply
    11,868,019.60x = 17,800,992.60 × 3,889,843.60
  4. Step 4: Simplify right side
    11,868,019.60x = 69,243,077,138,757.37
  5. Step 5: Solve for x
    x = 69,243,077,138,757.37/11,868,019.60
  6. Step 6: Final answer
    x = 5,834,425.58

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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.