Home / 11,718-15,489

Finding the Third Proportional to 11,718 and 15,489

Calculator

Solution

The third proportional to 11,718 and 15,489 is: 20,473.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718 : 15,489 = 15,489 : x
  2. Step 2: Convert to fraction form
    11,718/15,489 = 15,489/x
  3. Step 3: Cross multiply
    11,718x = 15,489 × 15,489
  4. Step 4: Simplify right side
    11,718x = 239,909,121
  5. Step 5: Solve for x
    x = 239,909,121/11,718
  6. Step 6: Final answer
    x = 20,473.56

Related Problems

Find third proportional to 5,859 and 7,744.50
Half scale
Find third proportional to 23,436 and 30,978
Double scale
Find third proportional to 11,720 and 15,492
Similar ratio
Find third proportional to 17,577 and 23,233.50
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.