Home / 18,759-40,109

Finding the Third Proportional to 18,759 and 40,109

Calculator

Solution

The third proportional to 18,759 and 40,109 is: 85,757.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759 : 40,109 = 40,109 : x
  2. Step 2: Convert to fraction form
    18,759/40,109 = 40,109/x
  3. Step 3: Cross multiply
    18,759x = 40,109 × 40,109
  4. Step 4: Simplify right side
    18,759x = 1,608,731,881
  5. Step 5: Solve for x
    x = 1,608,731,881/18,759
  6. Step 6: Final answer
    x = 85,757.87

Related Problems

Find third proportional to 9,379.50 and 20,054.50
Half scale
Find third proportional to 37,518 and 80,218
Double scale
Find third proportional to 18,761 and 40,113
Similar ratio
Find third proportional to 28,138.50 and 60,163.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.