Home / 11,686-17,529-3,478

Finding the Fourth Proportional to 11,686, 17,529 and 3,478

Calculator

Solution

The fourth proportional to 11,686, 17,529 and 3,478 is: 5,217

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,686 : 17,529 = 3,478 : x
  2. Step 2: Convert to fraction form
    11,686/17,529 = 3,478/x
  3. Step 3: Cross multiply
    11,686x = 17,529 × 3,478
  4. Step 4: Simplify right side
    11,686x = 60,965,862
  5. Step 5: Solve for x
    x = 60,965,862/11,686
  6. Step 6: Final answer
    x = 5,217

Related Problems

Find fourth proportional to 5,843, 8,764.50 and 1,739
Half scale
Find fourth proportional to 23,372, 35,058 and 6,956
Double scale
Find fourth proportional to 11,687, 17,530.50 and 3,479
Similar ratio
Find fourth proportional to 17,529, 26,293.50 and 5,217
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.