Home / 21,556-29,108

Finding the Third Proportional to 21,556 and 29,108

Calculator

Solution

The third proportional to 21,556 and 29,108 is: 39,305.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556 : 29,108 = 29,108 : x
  2. Step 2: Convert to fraction form
    21,556/29,108 = 29,108/x
  3. Step 3: Cross multiply
    21,556x = 29,108 × 29,108
  4. Step 4: Simplify right side
    21,556x = 847,275,664
  5. Step 5: Solve for x
    x = 847,275,664/21,556
  6. Step 6: Final answer
    x = 39,305.79

Related Problems

Find third proportional to 10,778 and 14,554
Half scale
Find third proportional to 43,112 and 58,216
Double scale
Find third proportional to 21,558 and 29,111
Similar ratio
Find third proportional to 32,334 and 43,662
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.