Home / 12.01-18.05-6

Finding the Fourth Proportional to 12.01, 18.05 and 6

Calculator

Solution

The fourth proportional to 12.01, 18.05 and 6 is: 9.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12.01 : 18.05 = 6 : x
  2. Step 2: Convert to fraction form
    12.01/18.05 = 6/x
  3. Step 3: Cross multiply
    12.01x = 18.05 × 6
  4. Step 4: Simplify right side
    12.01x = 108.27
  5. Step 5: Solve for x
    x = 108.27/12.01
  6. Step 6: Final answer
    x = 9.02

Related Problems

Find fourth proportional to 6.00, 9.02 and 3
Half scale
Find fourth proportional to 24.02, 36.09 and 12
Double scale
Find fourth proportional to 13.01, 19.55 and 7
Similar ratio
Find fourth proportional to 18.01, 27.07 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.