Home / 12,982,786.20-19,474,179.30-12,429,912.60

Finding the Fourth Proportional to 12,982,786.20, 19,474,179.30 and 12,429,912.60

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Solution

The fourth proportional to 12,982,786.20, 19,474,179.30 and 12,429,912.60 is: 18,644,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,982,786.20 : 19,474,179.30 = 12,429,912.60 : x
  2. Step 2: Convert to fraction form
    12,982,786.20/19,474,179.30 = 12,429,912.60/x
  3. Step 3: Cross multiply
    12,982,786.20x = 19,474,179.30 × 12,429,912.60
  4. Step 4: Simplify right side
    12,982,786.20x = 242,062,346,655,729.19
  5. Step 5: Solve for x
    x = 242,062,346,655,729.19/12,982,786.20
  6. Step 6: Final answer
    x = 18,644,868.90

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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.