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Finding the Fourth Proportional to 10,991.75, 15,168.62 and 6,023.75

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Solution

The fourth proportional to 10,991.75, 15,168.62 and 6,023.75 is: 8,312.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.75 : 15,168.62 = 6,023.75 : x
  2. Step 2: Convert to fraction form
    10,991.75/15,168.62 = 6,023.75/x
  3. Step 3: Cross multiply
    10,991.75x = 15,168.62 × 6,023.75
  4. Step 4: Simplify right side
    10,991.75x = 91,371,944.61
  5. Step 5: Solve for x
    x = 91,371,944.61/10,991.75
  6. Step 6: Final answer
    x = 8,312.78

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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.