Home / 9,929-19,857

Finding the Third Proportional to 9,929 and 19,857

Calculator

Solution

The third proportional to 9,929 and 19,857 is: 39,712.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,929 : 19,857 = 19,857 : x
  2. Step 2: Convert to fraction form
    9,929/19,857 = 19,857/x
  3. Step 3: Cross multiply
    9,929x = 19,857 × 19,857
  4. Step 4: Simplify right side
    9,929x = 394,300,449
  5. Step 5: Solve for x
    x = 394,300,449/9,929
  6. Step 6: Final answer
    x = 39,712.00

Related Problems

Find third proportional to 4,964.50 and 9,928.50
Half scale
Find third proportional to 19,858 and 39,714
Double scale
Find third proportional to 9,931 and 19,861
Similar ratio
Find third proportional to 14,893.50 and 29,785.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.00) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.