Home / 13,908-21,206

Finding the Third Proportional to 13,908 and 21,206

Calculator

Solution

The third proportional to 13,908 and 21,206 is: 32,333.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908 : 21,206 = 21,206 : x
  2. Step 2: Convert to fraction form
    13,908/21,206 = 21,206/x
  3. Step 3: Cross multiply
    13,908x = 21,206 × 21,206
  4. Step 4: Simplify right side
    13,908x = 449,694,436
  5. Step 5: Solve for x
    x = 449,694,436/13,908
  6. Step 6: Final answer
    x = 32,333.51

Related Problems

Find third proportional to 6,954 and 10,603
Half scale
Find third proportional to 27,816 and 42,412
Double scale
Find third proportional to 13,910 and 21,209
Similar ratio
Find third proportional to 20,862 and 31,809
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.