Home / 8,289-12,471

Finding the Third Proportional to 8,289 and 12,471

Calculator

Solution

The third proportional to 8,289 and 12,471 is: 18,762.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,289 : 12,471 = 12,471 : x
  2. Step 2: Convert to fraction form
    8,289/12,471 = 12,471/x
  3. Step 3: Cross multiply
    8,289x = 12,471 × 12,471
  4. Step 4: Simplify right side
    8,289x = 155,525,841
  5. Step 5: Solve for x
    x = 155,525,841/8,289
  6. Step 6: Final answer
    x = 18,762.92

Related Problems

Find third proportional to 4,144.50 and 6,235.50
Half scale
Find third proportional to 16,578 and 24,942
Double scale
Find third proportional to 8,291 and 12,474
Similar ratio
Find third proportional to 12,433.50 and 18,706.50
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.