Home / 12,108.87-18,163.44-3,788.55

Finding the Fourth Proportional to 12,108.87, 18,163.44 and 3,788.55

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Solution

The fourth proportional to 12,108.87, 18,163.44 and 3,788.55 is: 5,682.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.87 : 18,163.44 = 3,788.55 : x
  2. Step 2: Convert to fraction form
    12,108.87/18,163.44 = 3,788.55/x
  3. Step 3: Cross multiply
    12,108.87x = 18,163.44 × 3,788.55
  4. Step 4: Simplify right side
    12,108.87x = 68,813,100.61
  5. Step 5: Solve for x
    x = 68,813,100.61/12,108.87
  6. Step 6: Final answer
    x = 5,682.87

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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.