Home / 12,810-18,839

Finding the Third Proportional to 12,810 and 18,839

Calculator

Solution

The third proportional to 12,810 and 18,839 is: 27,705.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810 : 18,839 = 18,839 : x
  2. Step 2: Convert to fraction form
    12,810/18,839 = 18,839/x
  3. Step 3: Cross multiply
    12,810x = 18,839 × 18,839
  4. Step 4: Simplify right side
    12,810x = 354,907,921
  5. Step 5: Solve for x
    x = 354,907,921/12,810
  6. Step 6: Final answer
    x = 27,705.54

Related Problems

Find third proportional to 6,405 and 9,419.50
Half scale
Find third proportional to 25,620 and 37,678
Double scale
Find third proportional to 12,812 and 18,842
Similar ratio
Find third proportional to 19,215 and 28,258.50
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.