Home / 18,091,810.80-27,137,716.20-7,989,231.60

Finding the Fourth Proportional to 18,091,810.80, 27,137,716.20 and 7,989,231.60

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Solution

The fourth proportional to 18,091,810.80, 27,137,716.20 and 7,989,231.60 is: 11,983,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,091,810.80 : 27,137,716.20 = 7,989,231.60 : x
  2. Step 2: Convert to fraction form
    18,091,810.80/27,137,716.20 = 7,989,231.60/x
  3. Step 3: Cross multiply
    18,091,810.80x = 27,137,716.20 × 7,989,231.60
  4. Step 4: Simplify right side
    18,091,810.80x = 216,809,499,816,871.91
  5. Step 5: Solve for x
    x = 216,809,499,816,871.91/18,091,810.80
  6. Step 6: Final answer
    x = 11,983,847.40

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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.