Home / 12,456,876.80-18,685,315.20-11,449,107.20

Finding the Fourth Proportional to 12,456,876.80, 18,685,315.20 and 11,449,107.20

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Solution

The fourth proportional to 12,456,876.80, 18,685,315.20 and 11,449,107.20 is: 17,173,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456,876.80 : 18,685,315.20 = 11,449,107.20 : x
  2. Step 2: Convert to fraction form
    12,456,876.80/18,685,315.20 = 11,449,107.20/x
  3. Step 3: Cross multiply
    12,456,876.80x = 18,685,315.20 × 11,449,107.20
  4. Step 4: Simplify right side
    12,456,876.80x = 213,930,176,790,589.41
  5. Step 5: Solve for x
    x = 213,930,176,790,589.41/12,456,876.80
  6. Step 6: Final answer
    x = 17,173,660.80

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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.