Home / 11,415-20,454

Finding the Third Proportional to 11,415 and 20,454

Calculator

Solution

The third proportional to 11,415 and 20,454 is: 36,650.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415 : 20,454 = 20,454 : x
  2. Step 2: Convert to fraction form
    11,415/20,454 = 20,454/x
  3. Step 3: Cross multiply
    11,415x = 20,454 × 20,454
  4. Step 4: Simplify right side
    11,415x = 418,366,116
  5. Step 5: Solve for x
    x = 418,366,116/11,415
  6. Step 6: Final answer
    x = 36,650.56

Related Problems

Find third proportional to 5,707.50 and 10,227
Half scale
Find third proportional to 22,830 and 40,908
Double scale
Find third proportional to 11,417 and 20,458
Similar ratio
Find third proportional to 17,122.50 and 30,681
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.