Home / 15,284-20,621

Finding the Third Proportional to 15,284 and 20,621

Calculator

Solution

The third proportional to 15,284 and 20,621 is: 27,821.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,284 : 20,621 = 20,621 : x
  2. Step 2: Convert to fraction form
    15,284/20,621 = 20,621/x
  3. Step 3: Cross multiply
    15,284x = 20,621 × 20,621
  4. Step 4: Simplify right side
    15,284x = 425,225,641
  5. Step 5: Solve for x
    x = 425,225,641/15,284
  6. Step 6: Final answer
    x = 27,821.62

Related Problems

Find third proportional to 7,642 and 10,310.50
Half scale
Find third proportional to 30,568 and 41,242
Double scale
Find third proportional to 15,286 and 20,624
Similar ratio
Find third proportional to 22,926 and 30,931.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.