Home / 21,240-29,707

Finding the Third Proportional to 21,240 and 29,707

Calculator

Solution

The third proportional to 21,240 and 29,707 is: 41,549.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240 : 29,707 = 29,707 : x
  2. Step 2: Convert to fraction form
    21,240/29,707 = 29,707/x
  3. Step 3: Cross multiply
    21,240x = 29,707 × 29,707
  4. Step 4: Simplify right side
    21,240x = 882,505,849
  5. Step 5: Solve for x
    x = 882,505,849/21,240
  6. Step 6: Final answer
    x = 41,549.24

Related Problems

Find third proportional to 10,620 and 14,853.50
Half scale
Find third proportional to 42,480 and 59,414
Double scale
Find third proportional to 21,242 and 29,710
Similar ratio
Find third proportional to 31,860 and 44,560.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.