Home / 8,278-18,911

Finding the Third Proportional to 8,278 and 18,911

Calculator

Solution

The third proportional to 8,278 and 18,911 is: 43,201.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278 : 18,911 = 18,911 : x
  2. Step 2: Convert to fraction form
    8,278/18,911 = 18,911/x
  3. Step 3: Cross multiply
    8,278x = 18,911 × 18,911
  4. Step 4: Simplify right side
    8,278x = 357,625,921
  5. Step 5: Solve for x
    x = 357,625,921/8,278
  6. Step 6: Final answer
    x = 43,201.97

Related Problems

Find third proportional to 4,139 and 9,455.50
Half scale
Find third proportional to 16,556 and 37,822
Double scale
Find third proportional to 8,280 and 18,916
Similar ratio
Find third proportional to 12,417 and 28,366.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.