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Finding the Fourth Proportional to 10,992.12, 15,169.12 and 5,956.38

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Solution

The fourth proportional to 10,992.12, 15,169.12 and 5,956.38 is: 8,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992.12 : 15,169.12 = 5,956.38 : x
  2. Step 2: Convert to fraction form
    10,992.12/15,169.12 = 5,956.38/x
  3. Step 3: Cross multiply
    10,992.12x = 15,169.12 × 5,956.38
  4. Step 4: Simplify right side
    10,992.12x = 90,353,042.99
  5. Step 5: Solve for x
    x = 90,353,042.99/10,992.12
  6. Step 6: Final answer
    x = 8,219.80

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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.