Home / 18,912-40,308

Finding the Third Proportional to 18,912 and 40,308

Calculator

Solution

The third proportional to 18,912 and 40,308 is: 85,910.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912 : 40,308 = 40,308 : x
  2. Step 2: Convert to fraction form
    18,912/40,308 = 40,308/x
  3. Step 3: Cross multiply
    18,912x = 40,308 × 40,308
  4. Step 4: Simplify right side
    18,912x = 1,624,734,864
  5. Step 5: Solve for x
    x = 1,624,734,864/18,912
  6. Step 6: Final answer
    x = 85,910.26

Related Problems

Find third proportional to 9,456 and 20,154
Half scale
Find third proportional to 37,824 and 80,616
Double scale
Find third proportional to 18,914 and 40,312
Similar ratio
Find third proportional to 28,368 and 60,462
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.