Home / 15,015-21,628

Finding the Third Proportional to 15,015 and 21,628

Calculator

Solution

The third proportional to 15,015 and 21,628 is: 31,153.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015 : 21,628 = 21,628 : x
  2. Step 2: Convert to fraction form
    15,015/21,628 = 21,628/x
  3. Step 3: Cross multiply
    15,015x = 21,628 × 21,628
  4. Step 4: Simplify right side
    15,015x = 467,770,384
  5. Step 5: Solve for x
    x = 467,770,384/15,015
  6. Step 6: Final answer
    x = 31,153.54

Related Problems

Find third proportional to 7,507.50 and 10,814
Half scale
Find third proportional to 30,030 and 43,256
Double scale
Find third proportional to 15,017 and 21,631
Similar ratio
Find third proportional to 22,522.50 and 32,442
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.