Home / 11.61-17.42-4

Finding the Fourth Proportional to 11.61, 17.42 and 4

Calculator

Solution

The fourth proportional to 11.61, 17.42 and 4 is: 6.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.61 : 17.42 = 4 : x
  2. Step 2: Convert to fraction form
    11.61/17.42 = 4/x
  3. Step 3: Cross multiply
    11.61x = 17.42 × 4
  4. Step 4: Simplify right side
    11.61x = 69.68
  5. Step 5: Solve for x
    x = 69.68/11.61
  6. Step 6: Final answer
    x = 6.00

Related Problems

Find fourth proportional to 5.81, 8.71 and 2
Half scale
Find fourth proportional to 23.22, 34.84 and 8
Double scale
Find fourth proportional to 12.61, 18.92 and 5
Similar ratio
Find fourth proportional to 17.42, 26.13 and 6
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.