Home / 18,018-39,000

Finding the Third Proportional to 18,018 and 39,000

Calculator

Solution

The third proportional to 18,018 and 39,000 is: 84,415.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,018 : 39,000 = 39,000 : x
  2. Step 2: Convert to fraction form
    18,018/39,000 = 39,000/x
  3. Step 3: Cross multiply
    18,018x = 39,000 × 39,000
  4. Step 4: Simplify right side
    18,018x = 1,521,000,000
  5. Step 5: Solve for x
    x = 1,521,000,000/18,018
  6. Step 6: Final answer
    x = 84,415.58

Related Problems

Find third proportional to 9,009 and 19,500
Half scale
Find third proportional to 36,036 and 78,000
Double scale
Find third proportional to 18,020 and 39,004
Similar ratio
Find third proportional to 27,027 and 58,500
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.