Home / 13,860-21,758

Finding the Third Proportional to 13,860 and 21,758

Calculator

Solution

The third proportional to 13,860 and 21,758 is: 34,156.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860 : 21,758 = 21,758 : x
  2. Step 2: Convert to fraction form
    13,860/21,758 = 21,758/x
  3. Step 3: Cross multiply
    13,860x = 21,758 × 21,758
  4. Step 4: Simplify right side
    13,860x = 473,410,564
  5. Step 5: Solve for x
    x = 473,410,564/13,860
  6. Step 6: Final answer
    x = 34,156.61

Related Problems

Find third proportional to 6,930 and 10,879
Half scale
Find third proportional to 27,720 and 43,516
Double scale
Find third proportional to 13,862 and 21,761
Similar ratio
Find third proportional to 20,790 and 32,637
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.