Home / 22.69-31.32-21.34

Finding the Fourth Proportional to 22.69, 31.32 and 21.34

Calculator

Solution

The fourth proportional to 22.69, 31.32 and 21.34 is: 29.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.69 : 31.32 = 21.34 : x
  2. Step 2: Convert to fraction form
    22.69/31.32 = 21.34/x
  3. Step 3: Cross multiply
    22.69x = 31.32 × 21.34
  4. Step 4: Simplify right side
    22.69x = 668.29
  5. Step 5: Solve for x
    x = 668.29/22.69
  6. Step 6: Final answer
    x = 29.46

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.