Home / 13,440-20,512

Finding the Third Proportional to 13,440 and 20,512

Calculator

Solution

The third proportional to 13,440 and 20,512 is: 31,305.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440 : 20,512 = 20,512 : x
  2. Step 2: Convert to fraction form
    13,440/20,512 = 20,512/x
  3. Step 3: Cross multiply
    13,440x = 20,512 × 20,512
  4. Step 4: Simplify right side
    13,440x = 420,742,144
  5. Step 5: Solve for x
    x = 420,742,144/13,440
  6. Step 6: Final answer
    x = 31,305.22

Related Problems

Find third proportional to 6,720 and 10,256
Half scale
Find third proportional to 26,880 and 41,024
Double scale
Find third proportional to 13,442 and 20,515
Similar ratio
Find third proportional to 20,160 and 30,768
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.