Home / 16,912-18,688

Finding the Third Proportional to 16,912 and 18,688

Calculator

Solution

The third proportional to 16,912 and 18,688 is: 20,650.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,912 : 18,688 = 18,688 : x
  2. Step 2: Convert to fraction form
    16,912/18,688 = 18,688/x
  3. Step 3: Cross multiply
    16,912x = 18,688 × 18,688
  4. Step 4: Simplify right side
    16,912x = 349,241,344
  5. Step 5: Solve for x
    x = 349,241,344/16,912
  6. Step 6: Final answer
    x = 20,650.51

Related Problems

Find third proportional to 8,456 and 9,344
Half scale
Find third proportional to 33,824 and 37,376
Double scale
Find third proportional to 16,914 and 18,690
Similar ratio
Find third proportional to 25,368 and 28,032
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.