Home / 12,790-18,728

Finding the Third Proportional to 12,790 and 18,728

Calculator

Solution

The third proportional to 12,790 and 18,728 is: 27,422.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790 : 18,728 = 18,728 : x
  2. Step 2: Convert to fraction form
    12,790/18,728 = 18,728/x
  3. Step 3: Cross multiply
    12,790x = 18,728 × 18,728
  4. Step 4: Simplify right side
    12,790x = 350,737,984
  5. Step 5: Solve for x
    x = 350,737,984/12,790
  6. Step 6: Final answer
    x = 27,422.83

Related Problems

Find third proportional to 6,395 and 9,364
Half scale
Find third proportional to 25,580 and 37,456
Double scale
Find third proportional to 12,792 and 18,731
Similar ratio
Find third proportional to 19,185 and 28,092
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.