Home / 14,420-18,990

Finding the Third Proportional to 14,420 and 18,990

Calculator

Solution

The third proportional to 14,420 and 18,990 is: 25,008.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,420 : 18,990 = 18,990 : x
  2. Step 2: Convert to fraction form
    14,420/18,990 = 18,990/x
  3. Step 3: Cross multiply
    14,420x = 18,990 × 18,990
  4. Step 4: Simplify right side
    14,420x = 360,620,100
  5. Step 5: Solve for x
    x = 360,620,100/14,420
  6. Step 6: Final answer
    x = 25,008.33

Related Problems

Find third proportional to 7,210 and 9,495
Half scale
Find third proportional to 28,840 and 37,980
Double scale
Find third proportional to 14,422 and 18,993
Similar ratio
Find third proportional to 21,630 and 28,485
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.