Home / 21,438-45,708

Finding the Third Proportional to 21,438 and 45,708

Calculator

Solution

The third proportional to 21,438 and 45,708 is: 97,454.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438 : 45,708 = 45,708 : x
  2. Step 2: Convert to fraction form
    21,438/45,708 = 45,708/x
  3. Step 3: Cross multiply
    21,438x = 45,708 × 45,708
  4. Step 4: Simplify right side
    21,438x = 2,089,221,264
  5. Step 5: Solve for x
    x = 2,089,221,264/21,438
  6. Step 6: Final answer
    x = 97,454.11

Related Problems

Find third proportional to 10,719 and 22,854
Half scale
Find third proportional to 42,876 and 91,416
Double scale
Find third proportional to 21,440 and 45,712
Similar ratio
Find third proportional to 32,157 and 68,562
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.