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Finding the Fourth Proportional to 17,755.88, 26,635.40 and 5,105.70

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Solution

The fourth proportional to 17,755.88, 26,635.40 and 5,105.70 is: 7,659.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,755.88 : 26,635.40 = 5,105.70 : x
  2. Step 2: Convert to fraction form
    17,755.88/26,635.40 = 5,105.70/x
  3. Step 3: Cross multiply
    17,755.88x = 26,635.40 × 5,105.70
  4. Step 4: Simplify right side
    17,755.88x = 135,992,336.25
  5. Step 5: Solve for x
    x = 135,992,336.25/17,755.88
  6. Step 6: Final answer
    x = 7,659.01

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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.