Home / 20,989-45,671

Finding the Third Proportional to 20,989 and 45,671

Calculator

Solution

The third proportional to 20,989 and 45,671 is: 99,377.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989 : 45,671 = 45,671 : x
  2. Step 2: Convert to fraction form
    20,989/45,671 = 45,671/x
  3. Step 3: Cross multiply
    20,989x = 45,671 × 45,671
  4. Step 4: Simplify right side
    20,989x = 2,085,840,241
  5. Step 5: Solve for x
    x = 2,085,840,241/20,989
  6. Step 6: Final answer
    x = 99,377.78

Related Problems

Find third proportional to 10,494.50 and 22,835.50
Half scale
Find third proportional to 41,978 and 91,342
Double scale
Find third proportional to 20,991 and 45,675
Similar ratio
Find third proportional to 31,483.50 and 68,506.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.