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Finding the Fourth Proportional to 11,998.35, 17,999.64 and 5,769.65

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Solution

The fourth proportional to 11,998.35, 17,999.64 and 5,769.65 is: 8,655.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.35 : 17,999.64 = 5,769.65 : x
  2. Step 2: Convert to fraction form
    11,998.35/17,999.64 = 5,769.65/x
  3. Step 3: Cross multiply
    11,998.35x = 17,999.64 × 5,769.65
  4. Step 4: Simplify right side
    11,998.35x = 103,851,532.93
  5. Step 5: Solve for x
    x = 103,851,532.93/11,998.35
  6. Step 6: Final answer
    x = 8,655.48

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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.