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Finding the Fourth Proportional to 11,745.97, 17,589.77 and 8,219.46

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Solution

The fourth proportional to 11,745.97, 17,589.77 and 8,219.46 is: 12,308.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.97 : 17,589.77 = 8,219.46 : x
  2. Step 2: Convert to fraction form
    11,745.97/17,589.77 = 8,219.46/x
  3. Step 3: Cross multiply
    11,745.97x = 17,589.77 × 8,219.46
  4. Step 4: Simplify right side
    11,745.97x = 144,578,410.92
  5. Step 5: Solve for x
    x = 144,578,410.92/11,745.97
  6. Step 6: Final answer
    x = 12,308.77

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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.