Home / 8,427-12,642

Finding the Third Proportional to 8,427 and 12,642

Calculator

Solution

The third proportional to 8,427 and 12,642 is: 18,965.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427 : 12,642 = 12,642 : x
  2. Step 2: Convert to fraction form
    8,427/12,642 = 12,642/x
  3. Step 3: Cross multiply
    8,427x = 12,642 × 12,642
  4. Step 4: Simplify right side
    8,427x = 159,820,164
  5. Step 5: Solve for x
    x = 159,820,164/8,427
  6. Step 6: Final answer
    x = 18,965.25

Related Problems

Find third proportional to 4,213.50 and 6,321
Half scale
Find third proportional to 16,854 and 25,284
Double scale
Find third proportional to 8,429 and 12,645
Similar ratio
Find third proportional to 12,640.50 and 18,963
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.