Home / 18,979-40,766

Finding the Third Proportional to 18,979 and 40,766

Calculator

Solution

The third proportional to 18,979 and 40,766 is: 87,563.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979 : 40,766 = 40,766 : x
  2. Step 2: Convert to fraction form
    18,979/40,766 = 40,766/x
  3. Step 3: Cross multiply
    18,979x = 40,766 × 40,766
  4. Step 4: Simplify right side
    18,979x = 1,661,866,756
  5. Step 5: Solve for x
    x = 1,661,866,756/18,979
  6. Step 6: Final answer
    x = 87,563.45

Related Problems

Find third proportional to 9,489.50 and 20,383
Half scale
Find third proportional to 37,958 and 81,532
Double scale
Find third proportional to 18,981 and 40,770
Similar ratio
Find third proportional to 28,468.50 and 61,149
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.