Home / 9,888-19,968

Finding the Third Proportional to 9,888 and 19,968

Calculator

Solution

The third proportional to 9,888 and 19,968 is: 40,323.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,888 : 19,968 = 19,968 : x
  2. Step 2: Convert to fraction form
    9,888/19,968 = 19,968/x
  3. Step 3: Cross multiply
    9,888x = 19,968 × 19,968
  4. Step 4: Simplify right side
    9,888x = 398,721,024
  5. Step 5: Solve for x
    x = 398,721,024/9,888
  6. Step 6: Final answer
    x = 40,323.73

Related Problems

Find third proportional to 4,944 and 9,984
Half scale
Find third proportional to 19,776 and 39,936
Double scale
Find third proportional to 9,890 and 19,972
Similar ratio
Find third proportional to 14,832 and 29,952
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.