Home / 13,309,839.81-18,367,591.19-7,198,268.31

Finding the Fourth Proportional to 13,309,839.81, 18,367,591.19 and 7,198,268.31

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Solution

The fourth proportional to 13,309,839.81, 18,367,591.19 and 7,198,268.31 is: 9,933,616.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309,839.81 : 18,367,591.19 = 7,198,268.31 : x
  2. Step 2: Convert to fraction form
    13,309,839.81/18,367,591.19 = 7,198,268.31/x
  3. Step 3: Cross multiply
    13,309,839.81x = 18,367,591.19 × 7,198,268.31
  4. Step 4: Simplify right side
    13,309,839.81x = 132,214,849,558,020.83
  5. Step 5: Solve for x
    x = 132,214,849,558,020.83/13,309,839.81
  6. Step 6: Final answer
    x = 9,933,616.89

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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.