Home / 16,722-21,478

Finding the Third Proportional to 16,722 and 21,478

Calculator

Solution

The third proportional to 16,722 and 21,478 is: 27,586.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,722 : 21,478 = 21,478 : x
  2. Step 2: Convert to fraction form
    16,722/21,478 = 21,478/x
  3. Step 3: Cross multiply
    16,722x = 21,478 × 21,478
  4. Step 4: Simplify right side
    16,722x = 461,304,484
  5. Step 5: Solve for x
    x = 461,304,484/16,722
  6. Step 6: Final answer
    x = 27,586.68

Related Problems

Find third proportional to 8,361 and 10,739
Half scale
Find third proportional to 33,444 and 42,956
Double scale
Find third proportional to 16,724 and 21,481
Similar ratio
Find third proportional to 25,083 and 32,217
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.