Home / 18,612-39,240

Finding the Third Proportional to 18,612 and 39,240

Calculator

Solution

The third proportional to 18,612 and 39,240 is: 82,730.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612 : 39,240 = 39,240 : x
  2. Step 2: Convert to fraction form
    18,612/39,240 = 39,240/x
  3. Step 3: Cross multiply
    18,612x = 39,240 × 39,240
  4. Step 4: Simplify right side
    18,612x = 1,539,777,600
  5. Step 5: Solve for x
    x = 1,539,777,600/18,612
  6. Step 6: Final answer
    x = 82,730.37

Related Problems

Find third proportional to 9,306 and 19,620
Half scale
Find third proportional to 37,224 and 78,480
Double scale
Find third proportional to 18,614 and 39,244
Similar ratio
Find third proportional to 27,918 and 58,860
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.