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Finding the Fourth Proportional to 17,991.66, 26,990.61 and 5,511.39

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Solution

The fourth proportional to 17,991.66, 26,990.61 and 5,511.39 is: 8,268.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991.66 : 26,990.61 = 5,511.39 : x
  2. Step 2: Convert to fraction form
    17,991.66/26,990.61 = 5,511.39/x
  3. Step 3: Cross multiply
    17,991.66x = 26,990.61 × 5,511.39
  4. Step 4: Simplify right side
    17,991.66x = 148,755,778.05
  5. Step 5: Solve for x
    x = 148,755,778.05/17,991.66
  6. Step 6: Final answer
    x = 8,268.04

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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.