Home / 18,122-38,418

Finding the Third Proportional to 18,122 and 38,418

Calculator

Solution

The third proportional to 18,122 and 38,418 is: 81,444.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122 : 38,418 = 38,418 : x
  2. Step 2: Convert to fraction form
    18,122/38,418 = 38,418/x
  3. Step 3: Cross multiply
    18,122x = 38,418 × 38,418
  4. Step 4: Simplify right side
    18,122x = 1,475,942,724
  5. Step 5: Solve for x
    x = 1,475,942,724/18,122
  6. Step 6: Final answer
    x = 81,444.80

Related Problems

Find third proportional to 9,061 and 19,209
Half scale
Find third proportional to 36,244 and 76,836
Double scale
Find third proportional to 18,124 and 38,422
Similar ratio
Find third proportional to 27,183 and 57,627
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.