Home / 8,489-18,706

Finding the Third Proportional to 8,489 and 18,706

Calculator

Solution

The third proportional to 8,489 and 18,706 is: 41,219.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489 : 18,706 = 18,706 : x
  2. Step 2: Convert to fraction form
    8,489/18,706 = 18,706/x
  3. Step 3: Cross multiply
    8,489x = 18,706 × 18,706
  4. Step 4: Simplify right side
    8,489x = 349,914,436
  5. Step 5: Solve for x
    x = 349,914,436/8,489
  6. Step 6: Final answer
    x = 41,219.75

Related Problems

Find third proportional to 4,244.50 and 9,353
Half scale
Find third proportional to 16,978 and 37,412
Double scale
Find third proportional to 8,491 and 18,710
Similar ratio
Find third proportional to 12,733.50 and 28,059
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.