Home / 18,718-40,440

Finding the Third Proportional to 18,718 and 40,440

Calculator

Solution

The third proportional to 18,718 and 40,440 is: 87,370.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718 : 40,440 = 40,440 : x
  2. Step 2: Convert to fraction form
    18,718/40,440 = 40,440/x
  3. Step 3: Cross multiply
    18,718x = 40,440 × 40,440
  4. Step 4: Simplify right side
    18,718x = 1,635,393,600
  5. Step 5: Solve for x
    x = 1,635,393,600/18,718
  6. Step 6: Final answer
    x = 87,370.10

Related Problems

Find third proportional to 9,359 and 20,220
Half scale
Find third proportional to 37,436 and 80,880
Double scale
Find third proportional to 18,720 and 40,444
Similar ratio
Find third proportional to 28,077 and 60,660
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.