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Finding the Fourth Proportional to 17,918.69, 26,891.93 and 12,410.62

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Solution

The fourth proportional to 17,918.69, 26,891.93 and 12,410.62 is: 18,625.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,918.69 : 26,891.93 = 12,410.62 : x
  2. Step 2: Convert to fraction form
    17,918.69/26,891.93 = 12,410.62/x
  3. Step 3: Cross multiply
    17,918.69x = 26,891.93 × 12,410.62
  4. Step 4: Simplify right side
    17,918.69x = 333,745,488.09
  5. Step 5: Solve for x
    x = 333,745,488.09/17,918.69
  6. Step 6: Final answer
    x = 18,625.56

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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.