Home / 16.51-22.79-12.88

Finding the Fourth Proportional to 16.51, 22.79 and 12.88

Calculator

Solution

The fourth proportional to 16.51, 22.79 and 12.88 is: 17.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.51 : 22.79 = 12.88 : x
  2. Step 2: Convert to fraction form
    16.51/22.79 = 12.88/x
  3. Step 3: Cross multiply
    16.51x = 22.79 × 12.88
  4. Step 4: Simplify right side
    16.51x = 293.54
  5. Step 5: Solve for x
    x = 293.54/16.51
  6. Step 6: Final answer
    x = 17.78

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.