Home / 8,437-13,121

Finding the Third Proportional to 8,437 and 13,121

Calculator

Solution

The third proportional to 8,437 and 13,121 is: 20,405.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,437 : 13,121 = 13,121 : x
  2. Step 2: Convert to fraction form
    8,437/13,121 = 13,121/x
  3. Step 3: Cross multiply
    8,437x = 13,121 × 13,121
  4. Step 4: Simplify right side
    8,437x = 172,160,641
  5. Step 5: Solve for x
    x = 172,160,641/8,437
  6. Step 6: Final answer
    x = 20,405.43

Related Problems

Find third proportional to 4,218.50 and 6,560.50
Half scale
Find third proportional to 16,874 and 26,242
Double scale
Find third proportional to 8,439 and 13,124
Similar ratio
Find third proportional to 12,655.50 and 19,681.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.