Home / 20,430-28,909

Finding the Third Proportional to 20,430 and 28,909

Calculator

Solution

The third proportional to 20,430 and 28,909 is: 40,907.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430 : 28,909 = 28,909 : x
  2. Step 2: Convert to fraction form
    20,430/28,909 = 28,909/x
  3. Step 3: Cross multiply
    20,430x = 28,909 × 28,909
  4. Step 4: Simplify right side
    20,430x = 835,730,281
  5. Step 5: Solve for x
    x = 835,730,281/20,430
  6. Step 6: Final answer
    x = 40,907.01

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.