Home / 16.88-21.38

Finding the Third Proportional to 16.88 and 21.38

Calculator

Solution

The third proportional to 16.88 and 21.38 is: 27.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.88 : 21.38 = 21.38 : x
  2. Step 2: Convert to fraction form
    16.88/21.38 = 21.38/x
  3. Step 3: Cross multiply
    16.88x = 21.38 × 21.38
  4. Step 4: Simplify right side
    16.88x = 456.89
  5. Step 5: Solve for x
    x = 456.89/16.88
  6. Step 6: Final answer
    x = 27.08

Related Problems

Find third proportional to 8.44 and 10.69
Half scale
Find third proportional to 33.75 and 42.75
Double scale
Find third proportional to 19 and 24
Similar ratio
Find third proportional to 25.31 and 32.06
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.