Home / 8,990-20,997

Finding the Third Proportional to 8,990 and 20,997

Calculator

Solution

The third proportional to 8,990 and 20,997 is: 49,040.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990 : 20,997 = 20,997 : x
  2. Step 2: Convert to fraction form
    8,990/20,997 = 20,997/x
  3. Step 3: Cross multiply
    8,990x = 20,997 × 20,997
  4. Step 4: Simplify right side
    8,990x = 440,874,009
  5. Step 5: Solve for x
    x = 440,874,009/8,990
  6. Step 6: Final answer
    x = 49,040.49

Related Problems

Find third proportional to 4,495 and 10,498.50
Half scale
Find third proportional to 17,980 and 41,994
Double scale
Find third proportional to 8,992 and 21,002
Similar ratio
Find third proportional to 13,485 and 31,495.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.