Home / 12.09-18.21-10.83

Finding the Fourth Proportional to 12.09, 18.21 and 10.83

Calculator

Solution

The fourth proportional to 12.09, 18.21 and 10.83 is: 16.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12.09 : 18.21 = 10.83 : x
  2. Step 2: Convert to fraction form
    12.09/18.21 = 10.83/x
  3. Step 3: Cross multiply
    12.09x = 18.21 × 10.83
  4. Step 4: Simplify right side
    12.09x = 197.26
  5. Step 5: Solve for x
    x = 197.26/12.09
  6. Step 6: Final answer
    x = 16.32

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.