Home / 12,910-18,906

Finding the Third Proportional to 12,910 and 18,906

Calculator

Solution

The third proportional to 12,910 and 18,906 is: 27,686.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910 : 18,906 = 18,906 : x
  2. Step 2: Convert to fraction form
    12,910/18,906 = 18,906/x
  3. Step 3: Cross multiply
    12,910x = 18,906 × 18,906
  4. Step 4: Simplify right side
    12,910x = 357,436,836
  5. Step 5: Solve for x
    x = 357,436,836/12,910
  6. Step 6: Final answer
    x = 27,686.82

Related Problems

Find third proportional to 6,455 and 9,453
Half scale
Find third proportional to 25,820 and 37,812
Double scale
Find third proportional to 12,912 and 18,909
Similar ratio
Find third proportional to 19,365 and 28,359
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.