Home / 12,251,986.10-18,377,979.15-8,220,907.70

Finding the Fourth Proportional to 12,251,986.10, 18,377,979.15 and 8,220,907.70

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Solution

The fourth proportional to 12,251,986.10, 18,377,979.15 and 8,220,907.70 is: 12,331,361.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,251,986.10 : 18,377,979.15 = 8,220,907.70 : x
  2. Step 2: Convert to fraction form
    12,251,986.10/18,377,979.15 = 8,220,907.70/x
  3. Step 3: Cross multiply
    12,251,986.10x = 18,377,979.15 × 8,220,907.70
  4. Step 4: Simplify right side
    12,251,986.10x = 151,083,670,304,674.44
  5. Step 5: Solve for x
    x = 151,083,670,304,674.44/12,251,986.10
  6. Step 6: Final answer
    x = 12,331,361.55

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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.