Home / 8,980-12,430

Finding the Third Proportional to 8,980 and 12,430

Calculator

Solution

The third proportional to 8,980 and 12,430 is: 17,205.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980 : 12,430 = 12,430 : x
  2. Step 2: Convert to fraction form
    8,980/12,430 = 12,430/x
  3. Step 3: Cross multiply
    8,980x = 12,430 × 12,430
  4. Step 4: Simplify right side
    8,980x = 154,504,900
  5. Step 5: Solve for x
    x = 154,504,900/8,980
  6. Step 6: Final answer
    x = 17,205.45

Related Problems

Find third proportional to 4,490 and 6,215
Half scale
Find third proportional to 17,960 and 24,860
Double scale
Find third proportional to 8,982 and 12,433
Similar ratio
Find third proportional to 13,470 and 18,645
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.