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Finding the Fourth Proportional to 10,661.69, 15,992.62 and 2,763.68

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Solution

The fourth proportional to 10,661.69, 15,992.62 and 2,763.68 is: 4,145.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.69 : 15,992.62 = 2,763.68 : x
  2. Step 2: Convert to fraction form
    10,661.69/15,992.62 = 2,763.68/x
  3. Step 3: Cross multiply
    10,661.69x = 15,992.62 × 2,763.68
  4. Step 4: Simplify right side
    10,661.69x = 44,198,397.17
  5. Step 5: Solve for x
    x = 44,198,397.17/10,661.69
  6. Step 6: Final answer
    x = 4,145.53

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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.