Home / 11,780-18,479

Finding the Third Proportional to 11,780 and 18,479

Calculator

Solution

The third proportional to 11,780 and 18,479 is: 28,987.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,780 : 18,479 = 18,479 : x
  2. Step 2: Convert to fraction form
    11,780/18,479 = 18,479/x
  3. Step 3: Cross multiply
    11,780x = 18,479 × 18,479
  4. Step 4: Simplify right side
    11,780x = 341,473,441
  5. Step 5: Solve for x
    x = 341,473,441/11,780
  6. Step 6: Final answer
    x = 28,987.56

Related Problems

Find third proportional to 5,890 and 9,239.50
Half scale
Find third proportional to 23,560 and 36,958
Double scale
Find third proportional to 11,782 and 18,482
Similar ratio
Find third proportional to 17,670 and 27,718.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.