Home / 18,889-39,718

Finding the Third Proportional to 18,889 and 39,718

Calculator

Solution

The third proportional to 18,889 and 39,718 is: 83,515.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889 : 39,718 = 39,718 : x
  2. Step 2: Convert to fraction form
    18,889/39,718 = 39,718/x
  3. Step 3: Cross multiply
    18,889x = 39,718 × 39,718
  4. Step 4: Simplify right side
    18,889x = 1,577,519,524
  5. Step 5: Solve for x
    x = 1,577,519,524/18,889
  6. Step 6: Final answer
    x = 83,515.25

Related Problems

Find third proportional to 9,444.50 and 19,859
Half scale
Find third proportional to 37,778 and 79,436
Double scale
Find third proportional to 18,891 and 39,722
Similar ratio
Find third proportional to 28,333.50 and 59,577
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.