Home / 13,428-20,370

Finding the Third Proportional to 13,428 and 20,370

Calculator

Solution

The third proportional to 13,428 and 20,370 is: 30,900.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428 : 20,370 = 20,370 : x
  2. Step 2: Convert to fraction form
    13,428/20,370 = 20,370/x
  3. Step 3: Cross multiply
    13,428x = 20,370 × 20,370
  4. Step 4: Simplify right side
    13,428x = 414,936,900
  5. Step 5: Solve for x
    x = 414,936,900/13,428
  6. Step 6: Final answer
    x = 30,900.87

Related Problems

Find third proportional to 6,714 and 10,185
Half scale
Find third proportional to 26,856 and 40,740
Double scale
Find third proportional to 13,430 and 20,373
Similar ratio
Find third proportional to 20,142 and 30,555
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.