Home / 21,720-47,004

Finding the Third Proportional to 21,720 and 47,004

Calculator

Solution

The third proportional to 21,720 and 47,004 is: 101,720.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720 : 47,004 = 47,004 : x
  2. Step 2: Convert to fraction form
    21,720/47,004 = 47,004/x
  3. Step 3: Cross multiply
    21,720x = 47,004 × 47,004
  4. Step 4: Simplify right side
    21,720x = 2,209,376,016
  5. Step 5: Solve for x
    x = 2,209,376,016/21,720
  6. Step 6: Final answer
    x = 101,720.81

Related Problems

Find third proportional to 10,860 and 23,502
Half scale
Find third proportional to 43,440 and 94,008
Double scale
Find third proportional to 21,722 and 47,008
Similar ratio
Find third proportional to 32,580 and 70,506
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.