Home / 12,720-28,512

Finding the Third Proportional to 12,720 and 28,512

Calculator

Solution

The third proportional to 12,720 and 28,512 is: 63,909.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720 : 28,512 = 28,512 : x
  2. Step 2: Convert to fraction form
    12,720/28,512 = 28,512/x
  3. Step 3: Cross multiply
    12,720x = 28,512 × 28,512
  4. Step 4: Simplify right side
    12,720x = 812,934,144
  5. Step 5: Solve for x
    x = 812,934,144/12,720
  6. Step 6: Final answer
    x = 63,909.92

Related Problems

Find third proportional to 6,360 and 14,256
Half scale
Find third proportional to 25,440 and 57,024
Double scale
Find third proportional to 12,722 and 28,516
Similar ratio
Find third proportional to 19,080 and 42,768
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.24) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.