Home / 8,400-18,144

Finding the Third Proportional to 8,400 and 18,144

Calculator

Solution

The third proportional to 8,400 and 18,144 is: 39,191.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400 : 18,144 = 18,144 : x
  2. Step 2: Convert to fraction form
    8,400/18,144 = 18,144/x
  3. Step 3: Cross multiply
    8,400x = 18,144 × 18,144
  4. Step 4: Simplify right side
    8,400x = 329,204,736
  5. Step 5: Solve for x
    x = 329,204,736/8,400
  6. Step 6: Final answer
    x = 39,191.04

Related Problems

Find third proportional to 4,200 and 9,072
Half scale
Find third proportional to 16,800 and 36,288
Double scale
Find third proportional to 8,402 and 18,148
Similar ratio
Find third proportional to 12,600 and 27,216
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.