Home / 8,460-18,360

Finding the Third Proportional to 8,460 and 18,360

Calculator

Solution

The third proportional to 8,460 and 18,360 is: 39,845.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,460 : 18,360 = 18,360 : x
  2. Step 2: Convert to fraction form
    8,460/18,360 = 18,360/x
  3. Step 3: Cross multiply
    8,460x = 18,360 × 18,360
  4. Step 4: Simplify right side
    8,460x = 337,089,600
  5. Step 5: Solve for x
    x = 337,089,600/8,460
  6. Step 6: Final answer
    x = 39,845.11

Related Problems

Find third proportional to 4,230 and 9,180
Half scale
Find third proportional to 16,920 and 36,720
Double scale
Find third proportional to 8,462 and 18,364
Similar ratio
Find third proportional to 12,690 and 27,540
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.