Home / 13.60-20.41-6

Finding the Fourth Proportional to 13.60, 20.41 and 6

Calculator

Solution

The fourth proportional to 13.60, 20.41 and 6 is: 9.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.60 : 20.41 = 6 : x
  2. Step 2: Convert to fraction form
    13.60/20.41 = 6/x
  3. Step 3: Cross multiply
    13.60x = 20.41 × 6
  4. Step 4: Simplify right side
    13.60x = 122.46
  5. Step 5: Solve for x
    x = 122.46/13.60
  6. Step 6: Final answer
    x = 9.00

Related Problems

Find fourth proportional to 6.80, 10.21 and 3
Half scale
Find fourth proportional to 27.20, 40.82 and 12
Double scale
Find fourth proportional to 14.60, 21.91 and 7
Similar ratio
Find fourth proportional to 20.40, 30.62 and 9
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.