Home / 7,988-12,706

Finding the Third Proportional to 7,988 and 12,706

Calculator

Solution

The third proportional to 7,988 and 12,706 is: 20,210.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988 : 12,706 = 12,706 : x
  2. Step 2: Convert to fraction form
    7,988/12,706 = 12,706/x
  3. Step 3: Cross multiply
    7,988x = 12,706 × 12,706
  4. Step 4: Simplify right side
    7,988x = 161,442,436
  5. Step 5: Solve for x
    x = 161,442,436/7,988
  6. Step 6: Final answer
    x = 20,210.62

Related Problems

Find third proportional to 3,994 and 6,353
Half scale
Find third proportional to 15,976 and 25,412
Double scale
Find third proportional to 7,990 and 12,709
Similar ratio
Find third proportional to 11,982 and 19,059
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.