Home / 7,638-11,821.50

Finding the Third Proportional to 7,638 and 11,821.50

Calculator

Solution

The third proportional to 7,638 and 11,821.50 is: 18,296.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,638 : 11,821.50 = 11,821.50 : x
  2. Step 2: Convert to fraction form
    7,638/11,821.50 = 11,821.50/x
  3. Step 3: Cross multiply
    7,638x = 11,821.50 × 11,821.50
  4. Step 4: Simplify right side
    7,638x = 139,747,862.25
  5. Step 5: Solve for x
    x = 139,747,862.25/7,638
  6. Step 6: Final answer
    x = 18,296.39

Related Problems

Find third proportional to 3,819 and 5,910.75
Half scale
Find third proportional to 15,276 and 23,643
Double scale
Find third proportional to 7,640 and 11,825
Similar ratio
Find third proportional to 11,457 and 17,732.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.