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Finding the Fourth Proportional to 11,999.81, 18,006.20 and 5,843.81

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Solution

The fourth proportional to 11,999.81, 18,006.20 and 5,843.81 is: 8,768.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,999.81 : 18,006.20 = 5,843.81 : x
  2. Step 2: Convert to fraction form
    11,999.81/18,006.20 = 5,843.81/x
  3. Step 3: Cross multiply
    11,999.81x = 18,006.20 × 5,843.81
  4. Step 4: Simplify right side
    11,999.81x = 105,224,849.33
  5. Step 5: Solve for x
    x = 105,224,849.33/11,999.81
  6. Step 6: Final answer
    x = 8,768.87

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1.5x scale

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.