Home / 7,930-12,380

Finding the Third Proportional to 7,930 and 12,380

Calculator

Solution

The third proportional to 7,930 and 12,380 is: 19,327.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,930 : 12,380 = 12,380 : x
  2. Step 2: Convert to fraction form
    7,930/12,380 = 12,380/x
  3. Step 3: Cross multiply
    7,930x = 12,380 × 12,380
  4. Step 4: Simplify right side
    7,930x = 153,264,400
  5. Step 5: Solve for x
    x = 153,264,400/7,930
  6. Step 6: Final answer
    x = 19,327.16

Related Problems

Find third proportional to 3,965 and 6,190
Half scale
Find third proportional to 15,860 and 24,760
Double scale
Find third proportional to 7,932 and 12,383
Similar ratio
Find third proportional to 11,895 and 18,570
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.