Home / 20,440-28,784

Finding the Third Proportional to 20,440 and 28,784

Calculator

Solution

The third proportional to 20,440 and 28,784 is: 40,534.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440 : 28,784 = 28,784 : x
  2. Step 2: Convert to fraction form
    20,440/28,784 = 28,784/x
  3. Step 3: Cross multiply
    20,440x = 28,784 × 28,784
  4. Step 4: Simplify right side
    20,440x = 828,518,656
  5. Step 5: Solve for x
    x = 828,518,656/20,440
  6. Step 6: Final answer
    x = 40,534.18

Related Problems

Find third proportional to 10,220 and 14,392
Half scale
Find third proportional to 40,880 and 57,568
Double scale
Find third proportional to 20,442 and 28,787
Similar ratio
Find third proportional to 30,660 and 43,176
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.