Home / 20,579-31,724

Finding the Third Proportional to 20,579 and 31,724

Calculator

Solution

The third proportional to 20,579 and 31,724 is: 48,904.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579 : 31,724 = 31,724 : x
  2. Step 2: Convert to fraction form
    20,579/31,724 = 31,724/x
  3. Step 3: Cross multiply
    20,579x = 31,724 × 31,724
  4. Step 4: Simplify right side
    20,579x = 1,006,412,176
  5. Step 5: Solve for x
    x = 1,006,412,176/20,579
  6. Step 6: Final answer
    x = 48,904.81

Related Problems

Find third proportional to 10,289.50 and 15,862
Half scale
Find third proportional to 41,158 and 63,448
Double scale
Find third proportional to 20,581 and 31,727
Similar ratio
Find third proportional to 30,868.50 and 47,586
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.