Home / 19,940-21,803

Finding the Third Proportional to 19,940 and 21,803

Calculator

Solution

The third proportional to 19,940 and 21,803 is: 23,840.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940 : 21,803 = 21,803 : x
  2. Step 2: Convert to fraction form
    19,940/21,803 = 21,803/x
  3. Step 3: Cross multiply
    19,940x = 21,803 × 21,803
  4. Step 4: Simplify right side
    19,940x = 475,370,809
  5. Step 5: Solve for x
    x = 475,370,809/19,940
  6. Step 6: Final answer
    x = 23,840.06

Related Problems

Find third proportional to 9,970 and 10,901.50
Half scale
Find third proportional to 39,880 and 43,606
Double scale
Find third proportional to 19,942 and 21,805
Similar ratio
Find third proportional to 29,910 and 32,704.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.