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Finding the Fourth Proportional to 13,762,687.73, 18,992,821.28 and 7,568,078.57

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Solution

The fourth proportional to 13,762,687.73, 18,992,821.28 and 7,568,078.57 is: 10,444,120.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,762,687.73 : 18,992,821.28 = 7,568,078.57 : x
  2. Step 2: Convert to fraction form
    13,762,687.73/18,992,821.28 = 7,568,078.57/x
  3. Step 3: Cross multiply
    13,762,687.73x = 18,992,821.28 × 7,568,078.57
  4. Step 4: Simplify right side
    13,762,687.73x = 143,739,163,713,007.97
  5. Step 5: Solve for x
    x = 143,739,163,713,007.97/13,762,687.73
  6. Step 6: Final answer
    x = 10,444,120.11

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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.