Home / 8,612-12,988

Finding the Third Proportional to 8,612 and 12,988

Calculator

Solution

The third proportional to 8,612 and 12,988 is: 19,587.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612 : 12,988 = 12,988 : x
  2. Step 2: Convert to fraction form
    8,612/12,988 = 12,988/x
  3. Step 3: Cross multiply
    8,612x = 12,988 × 12,988
  4. Step 4: Simplify right side
    8,612x = 168,688,144
  5. Step 5: Solve for x
    x = 168,688,144/8,612
  6. Step 6: Final answer
    x = 19,587.57

Related Problems

Find third proportional to 4,306 and 6,494
Half scale
Find third proportional to 17,224 and 25,976
Double scale
Find third proportional to 8,614 and 12,991
Similar ratio
Find third proportional to 12,918 and 19,482
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.