Home / 7,128-11,384

Finding the Third Proportional to 7,128 and 11,384

Calculator

Solution

The third proportional to 7,128 and 11,384 is: 18,181.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128 : 11,384 = 11,384 : x
  2. Step 2: Convert to fraction form
    7,128/11,384 = 11,384/x
  3. Step 3: Cross multiply
    7,128x = 11,384 × 11,384
  4. Step 4: Simplify right side
    7,128x = 129,595,456
  5. Step 5: Solve for x
    x = 129,595,456/7,128
  6. Step 6: Final answer
    x = 18,181.18

Related Problems

Find third proportional to 3,564 and 5,692
Half scale
Find third proportional to 14,256 and 22,768
Double scale
Find third proportional to 7,130 and 11,387
Similar ratio
Find third proportional to 10,692 and 17,076
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.