Home / 21,012-45,840

Finding the Third Proportional to 21,012 and 45,840

Calculator

Solution

The third proportional to 21,012 and 45,840 is: 100,005.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012 : 45,840 = 45,840 : x
  2. Step 2: Convert to fraction form
    21,012/45,840 = 45,840/x
  3. Step 3: Cross multiply
    21,012x = 45,840 × 45,840
  4. Step 4: Simplify right side
    21,012x = 2,101,305,600
  5. Step 5: Solve for x
    x = 2,101,305,600/21,012
  6. Step 6: Final answer
    x = 100,005.03

Related Problems

Find third proportional to 10,506 and 22,920
Half scale
Find third proportional to 42,024 and 91,680
Double scale
Find third proportional to 21,014 and 45,844
Similar ratio
Find third proportional to 31,518 and 68,760
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.