Home / 13,309,839.78-18,367,591.04-7,198,268.28

Finding the Fourth Proportional to 13,309,839.78, 18,367,591.04 and 7,198,268.28

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Solution

The fourth proportional to 13,309,839.78, 18,367,591.04 and 7,198,268.28 is: 9,933,616.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309,839.78 : 18,367,591.04 = 7,198,268.28 : x
  2. Step 2: Convert to fraction form
    13,309,839.78/18,367,591.04 = 7,198,268.28/x
  3. Step 3: Cross multiply
    13,309,839.78x = 18,367,591.04 × 7,198,268.28
  4. Step 4: Simplify right side
    13,309,839.78x = 132,214,847,963,244.20
  5. Step 5: Solve for x
    x = 132,214,847,963,244.20/13,309,839.78
  6. Step 6: Final answer
    x = 9,933,616.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.