Home / 13,620-20,175

Finding the Third Proportional to 13,620 and 20,175

Calculator

Solution

The third proportional to 13,620 and 20,175 is: 29,884.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620 : 20,175 = 20,175 : x
  2. Step 2: Convert to fraction form
    13,620/20,175 = 20,175/x
  3. Step 3: Cross multiply
    13,620x = 20,175 × 20,175
  4. Step 4: Simplify right side
    13,620x = 407,030,625
  5. Step 5: Solve for x
    x = 407,030,625/13,620
  6. Step 6: Final answer
    x = 29,884.77

Related Problems

Find third proportional to 6,810 and 10,087.50
Half scale
Find third proportional to 27,240 and 40,350
Double scale
Find third proportional to 13,622 and 20,178
Similar ratio
Find third proportional to 20,430 and 30,262.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.