Home / 15,738-21,663

Finding the Third Proportional to 15,738 and 21,663

Calculator

Solution

The third proportional to 15,738 and 21,663 is: 29,818.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,738 : 21,663 = 21,663 : x
  2. Step 2: Convert to fraction form
    15,738/21,663 = 21,663/x
  3. Step 3: Cross multiply
    15,738x = 21,663 × 21,663
  4. Step 4: Simplify right side
    15,738x = 469,285,569
  5. Step 5: Solve for x
    x = 469,285,569/15,738
  6. Step 6: Final answer
    x = 29,818.63

Related Problems

Find third proportional to 7,869 and 10,831.50
Half scale
Find third proportional to 31,476 and 43,326
Double scale
Find third proportional to 15,740 and 21,666
Similar ratio
Find third proportional to 23,607 and 32,494.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.