Home / 9,817-21,199

Finding the Third Proportional to 9,817 and 21,199

Calculator

Solution

The third proportional to 9,817 and 21,199 is: 45,777.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,817 : 21,199 = 21,199 : x
  2. Step 2: Convert to fraction form
    9,817/21,199 = 21,199/x
  3. Step 3: Cross multiply
    9,817x = 21,199 × 21,199
  4. Step 4: Simplify right side
    9,817x = 449,397,601
  5. Step 5: Solve for x
    x = 449,397,601/9,817
  6. Step 6: Final answer
    x = 45,777.49

Related Problems

Find third proportional to 4,908.50 and 10,599.50
Half scale
Find third proportional to 19,634 and 42,398
Double scale
Find third proportional to 9,819 and 21,203
Similar ratio
Find third proportional to 14,725.50 and 31,798.50
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.