Home / 20,240-28,311

Finding the Third Proportional to 20,240 and 28,311

Calculator

Solution

The third proportional to 20,240 and 28,311 is: 39,600.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,240 : 28,311 = 28,311 : x
  2. Step 2: Convert to fraction form
    20,240/28,311 = 28,311/x
  3. Step 3: Cross multiply
    20,240x = 28,311 × 28,311
  4. Step 4: Simplify right side
    20,240x = 801,512,721
  5. Step 5: Solve for x
    x = 801,512,721/20,240
  6. Step 6: Final answer
    x = 39,600.43

Related Problems

Find third proportional to 10,120 and 14,155.50
Half scale
Find third proportional to 40,480 and 56,622
Double scale
Find third proportional to 20,242 and 28,314
Similar ratio
Find third proportional to 30,360 and 42,466.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.