Home / 21,240-45,372

Finding the Third Proportional to 21,240 and 45,372

Calculator

Solution

The third proportional to 21,240 and 45,372 is: 96,921.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240 : 45,372 = 45,372 : x
  2. Step 2: Convert to fraction form
    21,240/45,372 = 45,372/x
  3. Step 3: Cross multiply
    21,240x = 45,372 × 45,372
  4. Step 4: Simplify right side
    21,240x = 2,058,618,384
  5. Step 5: Solve for x
    x = 2,058,618,384/21,240
  6. Step 6: Final answer
    x = 96,921.77

Related Problems

Find third proportional to 10,620 and 22,686
Half scale
Find third proportional to 42,480 and 90,744
Double scale
Find third proportional to 21,242 and 45,376
Similar ratio
Find third proportional to 31,860 and 68,058
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.