Home / 20,648-29,520

Finding the Third Proportional to 20,648 and 29,520

Calculator

Solution

The third proportional to 20,648 and 29,520 is: 42,204.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648 : 29,520 = 29,520 : x
  2. Step 2: Convert to fraction form
    20,648/29,520 = 29,520/x
  3. Step 3: Cross multiply
    20,648x = 29,520 × 29,520
  4. Step 4: Simplify right side
    20,648x = 871,430,400
  5. Step 5: Solve for x
    x = 871,430,400/20,648
  6. Step 6: Final answer
    x = 42,204.11

Related Problems

Find third proportional to 10,324 and 14,760
Half scale
Find third proportional to 41,296 and 59,040
Double scale
Find third proportional to 20,650 and 29,523
Similar ratio
Find third proportional to 30,972 and 44,280
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.