Home / 18,840-40,920

Finding the Third Proportional to 18,840 and 40,920

Calculator

Solution

The third proportional to 18,840 and 40,920 is: 88,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,840 : 40,920 = 40,920 : x
  2. Step 2: Convert to fraction form
    18,840/40,920 = 40,920/x
  3. Step 3: Cross multiply
    18,840x = 40,920 × 40,920
  4. Step 4: Simplify right side
    18,840x = 1,674,446,400
  5. Step 5: Solve for x
    x = 1,674,446,400/18,840
  6. Step 6: Final answer
    x = 88,877.20

Related Problems

Find third proportional to 9,420 and 20,460
Half scale
Find third proportional to 37,680 and 81,840
Double scale
Find third proportional to 18,842 and 40,924
Similar ratio
Find third proportional to 28,260 and 61,380
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.