Home / 20,376-30,690

Finding the Third Proportional to 20,376 and 30,690

Calculator

Solution

The third proportional to 20,376 and 30,690 is: 46,224.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376 : 30,690 = 30,690 : x
  2. Step 2: Convert to fraction form
    20,376/30,690 = 30,690/x
  3. Step 3: Cross multiply
    20,376x = 30,690 × 30,690
  4. Step 4: Simplify right side
    20,376x = 941,876,100
  5. Step 5: Solve for x
    x = 941,876,100/20,376
  6. Step 6: Final answer
    x = 46,224.78

Related Problems

Find third proportional to 10,188 and 15,345
Half scale
Find third proportional to 40,752 and 61,380
Double scale
Find third proportional to 20,378 and 30,693
Similar ratio
Find third proportional to 30,564 and 46,035
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.