Home / 18,000-39,579

Finding the Third Proportional to 18,000 and 39,579

Calculator

Solution

The third proportional to 18,000 and 39,579 is: 87,027.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,000 : 39,579 = 39,579 : x
  2. Step 2: Convert to fraction form
    18,000/39,579 = 39,579/x
  3. Step 3: Cross multiply
    18,000x = 39,579 × 39,579
  4. Step 4: Simplify right side
    18,000x = 1,566,497,241
  5. Step 5: Solve for x
    x = 1,566,497,241/18,000
  6. Step 6: Final answer
    x = 87,027.62

Related Problems

Find third proportional to 9,000 and 19,789.50
Half scale
Find third proportional to 36,000 and 79,158
Double scale
Find third proportional to 18,002 and 39,583
Similar ratio
Find third proportional to 27,000 and 59,368.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.