Home / 21,456-47,278

Finding the Third Proportional to 21,456 and 47,278

Calculator

Solution

The third proportional to 21,456 and 47,278 is: 104,176.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,456 : 47,278 = 47,278 : x
  2. Step 2: Convert to fraction form
    21,456/47,278 = 47,278/x
  3. Step 3: Cross multiply
    21,456x = 47,278 × 47,278
  4. Step 4: Simplify right side
    21,456x = 2,235,209,284
  5. Step 5: Solve for x
    x = 2,235,209,284/21,456
  6. Step 6: Final answer
    x = 104,176.42

Related Problems

Find third proportional to 10,728 and 23,639
Half scale
Find third proportional to 42,912 and 94,556
Double scale
Find third proportional to 21,458 and 47,282
Similar ratio
Find third proportional to 32,184 and 70,917
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.