Home / 8,742-12,375

Finding the Third Proportional to 8,742 and 12,375

Calculator

Solution

The third proportional to 8,742 and 12,375 is: 17,517.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742 : 12,375 = 12,375 : x
  2. Step 2: Convert to fraction form
    8,742/12,375 = 12,375/x
  3. Step 3: Cross multiply
    8,742x = 12,375 × 12,375
  4. Step 4: Simplify right side
    8,742x = 153,140,625
  5. Step 5: Solve for x
    x = 153,140,625/8,742
  6. Step 6: Final answer
    x = 17,517.80

Related Problems

Find third proportional to 4,371 and 6,187.50
Half scale
Find third proportional to 17,484 and 24,750
Double scale
Find third proportional to 8,744 and 12,378
Similar ratio
Find third proportional to 13,113 and 18,562.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.