Home / 8,080-12,129

Finding the Third Proportional to 8,080 and 12,129

Calculator

Solution

The third proportional to 8,080 and 12,129 is: 18,207.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080 : 12,129 = 12,129 : x
  2. Step 2: Convert to fraction form
    8,080/12,129 = 12,129/x
  3. Step 3: Cross multiply
    8,080x = 12,129 × 12,129
  4. Step 4: Simplify right side
    8,080x = 147,112,641
  5. Step 5: Solve for x
    x = 147,112,641/8,080
  6. Step 6: Final answer
    x = 18,207.01

Related Problems

Find third proportional to 4,040 and 6,064.50
Half scale
Find third proportional to 16,160 and 24,258
Double scale
Find third proportional to 8,082 and 12,132
Similar ratio
Find third proportional to 12,120 and 18,193.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.