Home / 11,928-15,831

Finding the Third Proportional to 11,928 and 15,831

Calculator

Solution

The third proportional to 11,928 and 15,831 is: 21,011.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928 : 15,831 = 15,831 : x
  2. Step 2: Convert to fraction form
    11,928/15,831 = 15,831/x
  3. Step 3: Cross multiply
    11,928x = 15,831 × 15,831
  4. Step 4: Simplify right side
    11,928x = 250,620,561
  5. Step 5: Solve for x
    x = 250,620,561/11,928
  6. Step 6: Final answer
    x = 21,011.11

Related Problems

Find third proportional to 5,964 and 7,915.50
Half scale
Find third proportional to 23,856 and 31,662
Double scale
Find third proportional to 11,930 and 15,834
Similar ratio
Find third proportional to 17,892 and 23,746.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.