Home / 28,138-40,215

Finding the Third Proportional to 28,138 and 40,215

Calculator

Solution

The third proportional to 28,138 and 40,215 is: 57,475.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138 : 40,215 = 40,215 : x
  2. Step 2: Convert to fraction form
    28,138/40,215 = 40,215/x
  3. Step 3: Cross multiply
    28,138x = 40,215 × 40,215
  4. Step 4: Simplify right side
    28,138x = 1,617,246,225
  5. Step 5: Solve for x
    x = 1,617,246,225/28,138
  6. Step 6: Final answer
    x = 57,475.52

Related Problems

Find third proportional to 14,069 and 20,107.50
Half scale
Find third proportional to 56,276 and 80,430
Double scale
Find third proportional to 28,140 and 40,218
Similar ratio
Find third proportional to 42,207 and 60,322.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.