Home / 22.19-42

Finding the Third Proportional to 22.19 and 42

Calculator

Solution

The third proportional to 22.19 and 42 is: 79.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.19 : 42 = 42 : x
  2. Step 2: Convert to fraction form
    22.19/42 = 42/x
  3. Step 3: Cross multiply
    22.19x = 42 × 42
  4. Step 4: Simplify right side
    22.19x = 1,764
  5. Step 5: Solve for x
    x = 1,764/22.19
  6. Step 6: Final answer
    x = 79.50

Related Problems

Find third proportional to 11.09 and 21
Half scale
Find third proportional to 44.38 and 84
Double scale
Find third proportional to 24 and 46
Similar ratio
Find third proportional to 33.28 and 63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.