Home / 18,820-39,436

Finding the Third Proportional to 18,820 and 39,436

Calculator

Solution

The third proportional to 18,820 and 39,436 is: 82,635.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820 : 39,436 = 39,436 : x
  2. Step 2: Convert to fraction form
    18,820/39,436 = 39,436/x
  3. Step 3: Cross multiply
    18,820x = 39,436 × 39,436
  4. Step 4: Simplify right side
    18,820x = 1,555,198,096
  5. Step 5: Solve for x
    x = 1,555,198,096/18,820
  6. Step 6: Final answer
    x = 82,635.39

Related Problems

Find third proportional to 9,410 and 19,718
Half scale
Find third proportional to 37,640 and 78,872
Double scale
Find third proportional to 18,822 and 39,440
Similar ratio
Find third proportional to 28,230 and 59,154
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.