Home / 10,640-15,360

Finding the Third Proportional to 10,640 and 15,360

Calculator

Solution

The third proportional to 10,640 and 15,360 is: 22,173.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640 : 15,360 = 15,360 : x
  2. Step 2: Convert to fraction form
    10,640/15,360 = 15,360/x
  3. Step 3: Cross multiply
    10,640x = 15,360 × 15,360
  4. Step 4: Simplify right side
    10,640x = 235,929,600
  5. Step 5: Solve for x
    x = 235,929,600/10,640
  6. Step 6: Final answer
    x = 22,173.83

Related Problems

Find third proportional to 5,320 and 7,680
Half scale
Find third proportional to 21,280 and 30,720
Double scale
Find third proportional to 10,642 and 15,363
Similar ratio
Find third proportional to 15,960 and 23,040
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.