Home / 15,732-20,781

Finding the Third Proportional to 15,732 and 20,781

Calculator

Solution

The third proportional to 15,732 and 20,781 is: 27,450.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,732 : 20,781 = 20,781 : x
  2. Step 2: Convert to fraction form
    15,732/20,781 = 20,781/x
  3. Step 3: Cross multiply
    15,732x = 20,781 × 20,781
  4. Step 4: Simplify right side
    15,732x = 431,849,961
  5. Step 5: Solve for x
    x = 431,849,961/15,732
  6. Step 6: Final answer
    x = 27,450.42

Related Problems

Find third proportional to 7,866 and 10,390.50
Half scale
Find third proportional to 31,464 and 41,562
Double scale
Find third proportional to 15,734 and 20,784
Similar ratio
Find third proportional to 23,598 and 31,171.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.