Home / 8,786-13,215

Finding the Third Proportional to 8,786 and 13,215

Calculator

Solution

The third proportional to 8,786 and 13,215 is: 19,876.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786 : 13,215 = 13,215 : x
  2. Step 2: Convert to fraction form
    8,786/13,215 = 13,215/x
  3. Step 3: Cross multiply
    8,786x = 13,215 × 13,215
  4. Step 4: Simplify right side
    8,786x = 174,636,225
  5. Step 5: Solve for x
    x = 174,636,225/8,786
  6. Step 6: Final answer
    x = 19,876.65

Related Problems

Find third proportional to 4,393 and 6,607.50
Half scale
Find third proportional to 17,572 and 26,430
Double scale
Find third proportional to 8,788 and 13,218
Similar ratio
Find third proportional to 13,179 and 19,822.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.