Home / 8,511-13,212

Finding the Third Proportional to 8,511 and 13,212

Calculator

Solution

The third proportional to 8,511 and 13,212 is: 20,509.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511 : 13,212 = 13,212 : x
  2. Step 2: Convert to fraction form
    8,511/13,212 = 13,212/x
  3. Step 3: Cross multiply
    8,511x = 13,212 × 13,212
  4. Step 4: Simplify right side
    8,511x = 174,556,944
  5. Step 5: Solve for x
    x = 174,556,944/8,511
  6. Step 6: Final answer
    x = 20,509.57

Related Problems

Find third proportional to 4,255.50 and 6,606
Half scale
Find third proportional to 17,022 and 26,424
Double scale
Find third proportional to 8,513 and 13,215
Similar ratio
Find third proportional to 12,766.50 and 19,818
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.