Home / 12,984,493.20-19,476,739.80-12,431,619.60

Finding the Fourth Proportional to 12,984,493.20, 19,476,739.80 and 12,431,619.60

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Solution

The fourth proportional to 12,984,493.20, 19,476,739.80 and 12,431,619.60 is: 18,647,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,984,493.20 : 19,476,739.80 = 12,431,619.60 : x
  2. Step 2: Convert to fraction form
    12,984,493.20/19,476,739.80 = 12,431,619.60/x
  3. Step 3: Cross multiply
    12,984,493.20x = 19,476,739.80 × 12,431,619.60
  4. Step 4: Simplify right side
    12,984,493.20x = 242,127,420,241,780.09
  5. Step 5: Solve for x
    x = 242,127,420,241,780.09/12,984,493.20
  6. Step 6: Final answer
    x = 18,647,429.40

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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.