Home / 10,278-20,940

Finding the Third Proportional to 10,278 and 20,940

Calculator

Solution

The third proportional to 10,278 and 20,940 is: 42,662.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278 : 20,940 = 20,940 : x
  2. Step 2: Convert to fraction form
    10,278/20,940 = 20,940/x
  3. Step 3: Cross multiply
    10,278x = 20,940 × 20,940
  4. Step 4: Simplify right side
    10,278x = 438,483,600
  5. Step 5: Solve for x
    x = 438,483,600/10,278
  6. Step 6: Final answer
    x = 42,662.35

Related Problems

Find third proportional to 5,139 and 10,470
Half scale
Find third proportional to 20,556 and 41,880
Double scale
Find third proportional to 10,280 and 20,944
Similar ratio
Find third proportional to 15,417 and 31,410
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.