Home / 12,780-19,185

Finding the Third Proportional to 12,780 and 19,185

Calculator

Solution

The third proportional to 12,780 and 19,185 is: 28,800.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780 : 19,185 = 19,185 : x
  2. Step 2: Convert to fraction form
    12,780/19,185 = 19,185/x
  3. Step 3: Cross multiply
    12,780x = 19,185 × 19,185
  4. Step 4: Simplify right side
    12,780x = 368,064,225
  5. Step 5: Solve for x
    x = 368,064,225/12,780
  6. Step 6: Final answer
    x = 28,800.02

Related Problems

Find third proportional to 6,390 and 9,592.50
Half scale
Find third proportional to 25,560 and 38,370
Double scale
Find third proportional to 12,782 and 19,188
Similar ratio
Find third proportional to 19,170 and 28,777.50
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.