Home / 18,690-40,836

Finding the Third Proportional to 18,690 and 40,836

Calculator

Solution

The third proportional to 18,690 and 40,836 is: 89,223.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690 : 40,836 = 40,836 : x
  2. Step 2: Convert to fraction form
    18,690/40,836 = 40,836/x
  3. Step 3: Cross multiply
    18,690x = 40,836 × 40,836
  4. Step 4: Simplify right side
    18,690x = 1,667,578,896
  5. Step 5: Solve for x
    x = 1,667,578,896/18,690
  6. Step 6: Final answer
    x = 89,223.05

Related Problems

Find third proportional to 9,345 and 20,418
Half scale
Find third proportional to 37,380 and 81,672
Double scale
Find third proportional to 18,692 and 40,840
Similar ratio
Find third proportional to 28,035 and 61,254
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.