Home / 13,110-18,420

Finding the Third Proportional to 13,110 and 18,420

Calculator

Solution

The third proportional to 13,110 and 18,420 is: 25,880.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110 : 18,420 = 18,420 : x
  2. Step 2: Convert to fraction form
    13,110/18,420 = 18,420/x
  3. Step 3: Cross multiply
    13,110x = 18,420 × 18,420
  4. Step 4: Simplify right side
    13,110x = 339,296,400
  5. Step 5: Solve for x
    x = 339,296,400/13,110
  6. Step 6: Final answer
    x = 25,880.73

Related Problems

Find third proportional to 6,555 and 9,210
Half scale
Find third proportional to 26,220 and 36,840
Double scale
Find third proportional to 13,112 and 18,423
Similar ratio
Find third proportional to 19,665 and 27,630
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.