Home / 12,816-18,777

Finding the Third Proportional to 12,816 and 18,777

Calculator

Solution

The third proportional to 12,816 and 18,777 is: 27,510.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,816 : 18,777 = 18,777 : x
  2. Step 2: Convert to fraction form
    12,816/18,777 = 18,777/x
  3. Step 3: Cross multiply
    12,816x = 18,777 × 18,777
  4. Step 4: Simplify right side
    12,816x = 352,575,729
  5. Step 5: Solve for x
    x = 352,575,729/12,816
  6. Step 6: Final answer
    x = 27,510.59

Related Problems

Find third proportional to 6,408 and 9,388.50
Half scale
Find third proportional to 25,632 and 37,554
Double scale
Find third proportional to 12,818 and 18,780
Similar ratio
Find third proportional to 19,224 and 28,165.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.