Home / 12,156-18,234-3,948

Finding the Fourth Proportional to 12,156, 18,234 and 3,948

Calculator

Solution

The fourth proportional to 12,156, 18,234 and 3,948 is: 5,922

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156 : 18,234 = 3,948 : x
  2. Step 2: Convert to fraction form
    12,156/18,234 = 3,948/x
  3. Step 3: Cross multiply
    12,156x = 18,234 × 3,948
  4. Step 4: Simplify right side
    12,156x = 71,987,832
  5. Step 5: Solve for x
    x = 71,987,832/12,156
  6. Step 6: Final answer
    x = 5,922

Related Problems

Find fourth proportional to 6,078, 9,117 and 1,974
Half scale
Find fourth proportional to 24,312, 36,468 and 7,896
Double scale
Find fourth proportional to 12,157, 18,235.50 and 3,949
Similar ratio
Find fourth proportional to 18,234, 27,351 and 5,922
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.