Home / 18,468-19,908

Finding the Third Proportional to 18,468 and 19,908

Calculator

Solution

The third proportional to 18,468 and 19,908 is: 21,460.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,468 : 19,908 = 19,908 : x
  2. Step 2: Convert to fraction form
    18,468/19,908 = 19,908/x
  3. Step 3: Cross multiply
    18,468x = 19,908 × 19,908
  4. Step 4: Simplify right side
    18,468x = 396,328,464
  5. Step 5: Solve for x
    x = 396,328,464/18,468
  6. Step 6: Final answer
    x = 21,460.28

Related Problems

Find third proportional to 9,234 and 9,954
Half scale
Find third proportional to 36,936 and 39,816
Double scale
Find third proportional to 18,470 and 19,910
Similar ratio
Find third proportional to 27,702 and 29,862
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.