Home / 12,131.87-18,197.81-3,366.78

Finding the Fourth Proportional to 12,131.87, 18,197.81 and 3,366.78

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Solution

The fourth proportional to 12,131.87, 18,197.81 and 3,366.78 is: 5,050.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.87 : 18,197.81 = 3,366.78 : x
  2. Step 2: Convert to fraction form
    12,131.87/18,197.81 = 3,366.78/x
  3. Step 3: Cross multiply
    12,131.87x = 18,197.81 × 3,366.78
  4. Step 4: Simplify right side
    12,131.87x = 61,268,005.92
  5. Step 5: Solve for x
    x = 61,268,005.92/12,131.87
  6. Step 6: Final answer
    x = 5,050.17

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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.