Home / 12,429-18,765

Finding the Third Proportional to 12,429 and 18,765

Calculator

Solution

The third proportional to 12,429 and 18,765 is: 28,330.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429 : 18,765 = 18,765 : x
  2. Step 2: Convert to fraction form
    12,429/18,765 = 18,765/x
  3. Step 3: Cross multiply
    12,429x = 18,765 × 18,765
  4. Step 4: Simplify right side
    12,429x = 352,125,225
  5. Step 5: Solve for x
    x = 352,125,225/12,429
  6. Step 6: Final answer
    x = 28,330.94

Related Problems

Find third proportional to 6,214.50 and 9,382.50
Half scale
Find third proportional to 24,858 and 37,530
Double scale
Find third proportional to 12,431 and 18,768
Similar ratio
Find third proportional to 18,643.50 and 28,147.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.