Home / 6,688-15,980

Finding the Third Proportional to 6,688 and 15,980

Calculator

Solution

The third proportional to 6,688 and 15,980 is: 38,181.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,688 : 15,980 = 15,980 : x
  2. Step 2: Convert to fraction form
    6,688/15,980 = 15,980/x
  3. Step 3: Cross multiply
    6,688x = 15,980 × 15,980
  4. Step 4: Simplify right side
    6,688x = 255,360,400
  5. Step 5: Solve for x
    x = 255,360,400/6,688
  6. Step 6: Final answer
    x = 38,181.88

Related Problems

Find third proportional to 3,344 and 7,990
Half scale
Find third proportional to 13,376 and 31,960
Double scale
Find third proportional to 6,690 and 15,985
Similar ratio
Find third proportional to 10,032 and 23,970
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.