Home / 15,432-17,880

Finding the Third Proportional to 15,432 and 17,880

Calculator

Solution

The third proportional to 15,432 and 17,880 is: 20,716.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432 : 17,880 = 17,880 : x
  2. Step 2: Convert to fraction form
    15,432/17,880 = 17,880/x
  3. Step 3: Cross multiply
    15,432x = 17,880 × 17,880
  4. Step 4: Simplify right side
    15,432x = 319,694,400
  5. Step 5: Solve for x
    x = 319,694,400/15,432
  6. Step 6: Final answer
    x = 20,716.33

Related Problems

Find third proportional to 7,716 and 8,940
Half scale
Find third proportional to 30,864 and 35,760
Double scale
Find third proportional to 15,434 and 17,882
Similar ratio
Find third proportional to 23,148 and 26,820
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.