Home / 13,890-30,636

Finding the Third Proportional to 13,890 and 30,636

Calculator

Solution

The third proportional to 13,890 and 30,636 is: 67,571.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890 : 30,636 = 30,636 : x
  2. Step 2: Convert to fraction form
    13,890/30,636 = 30,636/x
  3. Step 3: Cross multiply
    13,890x = 30,636 × 30,636
  4. Step 4: Simplify right side
    13,890x = 938,564,496
  5. Step 5: Solve for x
    x = 938,564,496/13,890
  6. Step 6: Final answer
    x = 67,571.24

Related Problems

Find third proportional to 6,945 and 15,318
Half scale
Find third proportional to 27,780 and 61,272
Double scale
Find third proportional to 13,892 and 30,640
Similar ratio
Find third proportional to 20,835 and 45,954
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.