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Finding the Fourth Proportional to 11,999.10, 17,998.65 and 11,124.30

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Solution

The fourth proportional to 11,999.10, 17,998.65 and 11,124.30 is: 16,686.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,999.10 : 17,998.65 = 11,124.30 : x
  2. Step 2: Convert to fraction form
    11,999.10/17,998.65 = 11,124.30/x
  3. Step 3: Cross multiply
    11,999.10x = 17,998.65 × 11,124.30
  4. Step 4: Simplify right side
    11,999.10x = 200,222,382.20
  5. Step 5: Solve for x
    x = 200,222,382.20/11,999.10
  6. Step 6: Final answer
    x = 16,686.45

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Similar ratio
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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.