Home / 18,422-39,740

Finding the Third Proportional to 18,422 and 39,740

Calculator

Solution

The third proportional to 18,422 and 39,740 is: 85,727.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422 : 39,740 = 39,740 : x
  2. Step 2: Convert to fraction form
    18,422/39,740 = 39,740/x
  3. Step 3: Cross multiply
    18,422x = 39,740 × 39,740
  4. Step 4: Simplify right side
    18,422x = 1,579,267,600
  5. Step 5: Solve for x
    x = 1,579,267,600/18,422
  6. Step 6: Final answer
    x = 85,727.26

Related Problems

Find third proportional to 9,211 and 19,870
Half scale
Find third proportional to 36,844 and 79,480
Double scale
Find third proportional to 18,424 and 39,744
Similar ratio
Find third proportional to 27,633 and 59,610
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.