Home / 12,981-20,079

Finding the Third Proportional to 12,981 and 20,079

Calculator

Solution

The third proportional to 12,981 and 20,079 is: 31,058.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981 : 20,079 = 20,079 : x
  2. Step 2: Convert to fraction form
    12,981/20,079 = 20,079/x
  3. Step 3: Cross multiply
    12,981x = 20,079 × 20,079
  4. Step 4: Simplify right side
    12,981x = 403,166,241
  5. Step 5: Solve for x
    x = 403,166,241/12,981
  6. Step 6: Final answer
    x = 31,058.18

Related Problems

Find third proportional to 6,490.50 and 10,039.50
Half scale
Find third proportional to 25,962 and 40,158
Double scale
Find third proportional to 12,983 and 20,082
Similar ratio
Find third proportional to 19,471.50 and 30,118.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.