Home / 12,378,743.80-18,568,115.70-11,538,935.80

Finding the Fourth Proportional to 12,378,743.80, 18,568,115.70 and 11,538,935.80

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Solution

The fourth proportional to 12,378,743.80, 18,568,115.70 and 11,538,935.80 is: 17,308,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378,743.80 : 18,568,115.70 = 11,538,935.80 : x
  2. Step 2: Convert to fraction form
    12,378,743.80/18,568,115.70 = 11,538,935.80/x
  3. Step 3: Cross multiply
    12,378,743.80x = 18,568,115.70 × 11,538,935.80
  4. Step 4: Simplify right side
    12,378,743.80x = 214,256,294,989,272.06
  5. Step 5: Solve for x
    x = 214,256,294,989,272.06/12,378,743.80
  6. Step 6: Final answer
    x = 17,308,403.70

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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.