Home / 12,872-18,872

Finding the Third Proportional to 12,872 and 18,872

Calculator

Solution

The third proportional to 12,872 and 18,872 is: 27,668.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872 : 18,872 = 18,872 : x
  2. Step 2: Convert to fraction form
    12,872/18,872 = 18,872/x
  3. Step 3: Cross multiply
    12,872x = 18,872 × 18,872
  4. Step 4: Simplify right side
    12,872x = 356,152,384
  5. Step 5: Solve for x
    x = 356,152,384/12,872
  6. Step 6: Final answer
    x = 27,668.77

Related Problems

Find third proportional to 6,436 and 9,436
Half scale
Find third proportional to 25,744 and 37,744
Double scale
Find third proportional to 12,874 and 18,875
Similar ratio
Find third proportional to 19,308 and 28,308
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.