Home / 19,960-39,380

Finding the Third Proportional to 19,960 and 39,380

Calculator

Solution

The third proportional to 19,960 and 39,380 is: 77,694.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,960 : 39,380 = 39,380 : x
  2. Step 2: Convert to fraction form
    19,960/39,380 = 39,380/x
  3. Step 3: Cross multiply
    19,960x = 39,380 × 39,380
  4. Step 4: Simplify right side
    19,960x = 1,550,784,400
  5. Step 5: Solve for x
    x = 1,550,784,400/19,960
  6. Step 6: Final answer
    x = 77,694.61

Related Problems

Find third proportional to 9,980 and 19,690
Half scale
Find third proportional to 39,920 and 78,760
Double scale
Find third proportional to 19,962 and 39,384
Similar ratio
Find third proportional to 29,940 and 59,070
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.