Home / 13,920-20,130

Finding the Third Proportional to 13,920 and 20,130

Calculator

Solution

The third proportional to 13,920 and 20,130 is: 29,110.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920 : 20,130 = 20,130 : x
  2. Step 2: Convert to fraction form
    13,920/20,130 = 20,130/x
  3. Step 3: Cross multiply
    13,920x = 20,130 × 20,130
  4. Step 4: Simplify right side
    13,920x = 405,216,900
  5. Step 5: Solve for x
    x = 405,216,900/13,920
  6. Step 6: Final answer
    x = 29,110.41

Related Problems

Find third proportional to 6,960 and 10,065
Half scale
Find third proportional to 27,840 and 40,260
Double scale
Find third proportional to 13,922 and 20,133
Similar ratio
Find third proportional to 20,880 and 30,195
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.