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Finding the Fourth Proportional to 11,991.63, 17,977.19 and 4,601.39

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Solution

The fourth proportional to 11,991.63, 17,977.19 and 4,601.39 is: 6,898.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.63 : 17,977.19 = 4,601.39 : x
  2. Step 2: Convert to fraction form
    11,991.63/17,977.19 = 4,601.39/x
  3. Step 3: Cross multiply
    11,991.63x = 17,977.19 × 4,601.39
  4. Step 4: Simplify right side
    11,991.63x = 82,720,084.23
  5. Step 5: Solve for x
    x = 82,720,084.23/11,991.63
  6. Step 6: Final answer
    x = 6,898.15

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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.