Home / 7,718-16,405

Finding the Third Proportional to 7,718 and 16,405

Calculator

Solution

The third proportional to 7,718 and 16,405 is: 34,869.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718 : 16,405 = 16,405 : x
  2. Step 2: Convert to fraction form
    7,718/16,405 = 16,405/x
  3. Step 3: Cross multiply
    7,718x = 16,405 × 16,405
  4. Step 4: Simplify right side
    7,718x = 269,124,025
  5. Step 5: Solve for x
    x = 269,124,025/7,718
  6. Step 6: Final answer
    x = 34,869.66

Related Problems

Find third proportional to 3,859 and 8,202.50
Half scale
Find third proportional to 15,436 and 32,810
Double scale
Find third proportional to 7,720 and 16,409
Similar ratio
Find third proportional to 11,577 and 24,607.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.