Home / 15,880-20,724

Finding the Third Proportional to 15,880 and 20,724

Calculator

Solution

The third proportional to 15,880 and 20,724 is: 27,045.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,880 : 20,724 = 20,724 : x
  2. Step 2: Convert to fraction form
    15,880/20,724 = 20,724/x
  3. Step 3: Cross multiply
    15,880x = 20,724 × 20,724
  4. Step 4: Simplify right side
    15,880x = 429,484,176
  5. Step 5: Solve for x
    x = 429,484,176/15,880
  6. Step 6: Final answer
    x = 27,045.60

Related Problems

Find third proportional to 7,940 and 10,362
Half scale
Find third proportional to 31,760 and 41,448
Double scale
Find third proportional to 15,882 and 20,727
Similar ratio
Find third proportional to 23,820 and 31,086
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.