Home / 12,287,999.80-18,431,999.70-6,979,583.80

Finding the Fourth Proportional to 12,287,999.80, 18,431,999.70 and 6,979,583.80

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Solution

The fourth proportional to 12,287,999.80, 18,431,999.70 and 6,979,583.80 is: 10,469,375.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287,999.80 : 18,431,999.70 = 6,979,583.80 : x
  2. Step 2: Convert to fraction form
    12,287,999.80/18,431,999.70 = 6,979,583.80/x
  3. Step 3: Cross multiply
    12,287,999.80x = 18,431,999.70 × 6,979,583.80
  4. Step 4: Simplify right side
    12,287,999.80x = 128,647,686,507,724.84
  5. Step 5: Solve for x
    x = 128,647,686,507,724.84/12,287,999.80
  6. Step 6: Final answer
    x = 10,469,375.70

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1.5x scale

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.