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Finding the Fourth Proportional to 17,853.60, 26,769.60 and 7,991.04

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Solution

The fourth proportional to 17,853.60, 26,769.60 and 7,991.04 is: 11,981.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,853.60 : 26,769.60 = 7,991.04 : x
  2. Step 2: Convert to fraction form
    17,853.60/26,769.60 = 7,991.04/x
  3. Step 3: Cross multiply
    17,853.60x = 26,769.60 × 7,991.04
  4. Step 4: Simplify right side
    17,853.60x = 213,916,944.38
  5. Step 5: Solve for x
    x = 213,916,944.38/17,853.60
  6. Step 6: Final answer
    x = 11,981.73

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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.