Home / 16,419-21,807

Finding the Third Proportional to 16,419 and 21,807

Calculator

Solution

The third proportional to 16,419 and 21,807 is: 28,963.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,419 : 21,807 = 21,807 : x
  2. Step 2: Convert to fraction form
    16,419/21,807 = 21,807/x
  3. Step 3: Cross multiply
    16,419x = 21,807 × 21,807
  4. Step 4: Simplify right side
    16,419x = 475,545,249
  5. Step 5: Solve for x
    x = 475,545,249/16,419
  6. Step 6: Final answer
    x = 28,963.11

Related Problems

Find third proportional to 8,209.50 and 10,903.50
Half scale
Find third proportional to 32,838 and 43,614
Double scale
Find third proportional to 16,421 and 21,810
Similar ratio
Find third proportional to 24,628.50 and 32,710.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.