Home / 12,478-18,660

Finding the Third Proportional to 12,478 and 18,660

Calculator

Solution

The third proportional to 12,478 and 18,660 is: 27,904.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478 : 18,660 = 18,660 : x
  2. Step 2: Convert to fraction form
    12,478/18,660 = 18,660/x
  3. Step 3: Cross multiply
    12,478x = 18,660 × 18,660
  4. Step 4: Simplify right side
    12,478x = 348,195,600
  5. Step 5: Solve for x
    x = 348,195,600/12,478
  6. Step 6: Final answer
    x = 27,904.76

Related Problems

Find third proportional to 6,239 and 9,330
Half scale
Find third proportional to 24,956 and 37,320
Double scale
Find third proportional to 12,480 and 18,663
Similar ratio
Find third proportional to 18,717 and 27,990
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.