Home / 13,320-15,120

Finding the Third Proportional to 13,320 and 15,120

Calculator

Solution

The third proportional to 13,320 and 15,120 is: 17,163.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320 : 15,120 = 15,120 : x
  2. Step 2: Convert to fraction form
    13,320/15,120 = 15,120/x
  3. Step 3: Cross multiply
    13,320x = 15,120 × 15,120
  4. Step 4: Simplify right side
    13,320x = 228,614,400
  5. Step 5: Solve for x
    x = 228,614,400/13,320
  6. Step 6: Final answer
    x = 17,163.24

Related Problems

Find third proportional to 6,660 and 7,560
Half scale
Find third proportional to 26,640 and 30,240
Double scale
Find third proportional to 13,322 and 15,122
Similar ratio
Find third proportional to 19,980 and 22,680
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.