Home / 9,021-21,000

Finding the Third Proportional to 9,021 and 21,000

Calculator

Solution

The third proportional to 9,021 and 21,000 is: 48,885.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,021 : 21,000 = 21,000 : x
  2. Step 2: Convert to fraction form
    9,021/21,000 = 21,000/x
  3. Step 3: Cross multiply
    9,021x = 21,000 × 21,000
  4. Step 4: Simplify right side
    9,021x = 441,000,000
  5. Step 5: Solve for x
    x = 441,000,000/9,021
  6. Step 6: Final answer
    x = 48,885.93

Related Problems

Find third proportional to 4,510.50 and 10,500
Half scale
Find third proportional to 18,042 and 42,000
Double scale
Find third proportional to 9,023 and 21,005
Similar ratio
Find third proportional to 13,531.50 and 31,500
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.