Home / 9,700-21,080

Finding the Third Proportional to 9,700 and 21,080

Calculator

Solution

The third proportional to 9,700 and 21,080 is: 45,810.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,700 : 21,080 = 21,080 : x
  2. Step 2: Convert to fraction form
    9,700/21,080 = 21,080/x
  3. Step 3: Cross multiply
    9,700x = 21,080 × 21,080
  4. Step 4: Simplify right side
    9,700x = 444,366,400
  5. Step 5: Solve for x
    x = 444,366,400/9,700
  6. Step 6: Final answer
    x = 45,810.97

Related Problems

Find third proportional to 4,850 and 10,540
Half scale
Find third proportional to 19,400 and 42,160
Double scale
Find third proportional to 9,702 and 21,084
Similar ratio
Find third proportional to 14,550 and 31,620
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.