Home / 12,399.87-18,599.57-3,634.59

Finding the Fourth Proportional to 12,399.87, 18,599.57 and 3,634.59

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Solution

The fourth proportional to 12,399.87, 18,599.57 and 3,634.59 is: 5,451.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399.87 : 18,599.57 = 3,634.59 : x
  2. Step 2: Convert to fraction form
    12,399.87/18,599.57 = 3,634.59/x
  3. Step 3: Cross multiply
    12,399.87x = 18,599.57 × 3,634.59
  4. Step 4: Simplify right side
    12,399.87x = 67,601,792.95
  5. Step 5: Solve for x
    x = 67,601,792.95/12,399.87
  6. Step 6: Final answer
    x = 5,451.81

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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.