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Finding the Fourth Proportional to 18,467,996.20, 27,701,994.30 and 9,964,940.20

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Solution

The fourth proportional to 18,467,996.20, 27,701,994.30 and 9,964,940.20 is: 14,947,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,467,996.20 : 27,701,994.30 = 9,964,940.20 : x
  2. Step 2: Convert to fraction form
    18,467,996.20/27,701,994.30 = 9,964,940.20/x
  3. Step 3: Cross multiply
    18,467,996.20x = 27,701,994.30 × 9,964,940.20
  4. Step 4: Simplify right side
    18,467,996.20x = 276,048,716,620,240.84
  5. Step 5: Solve for x
    x = 276,048,716,620,240.84/18,467,996.20
  6. Step 6: Final answer
    x = 14,947,410.30

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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.