Home / 15,516-17,772

Finding the Third Proportional to 15,516 and 17,772

Calculator

Solution

The third proportional to 15,516 and 17,772 is: 20,356.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516 : 17,772 = 17,772 : x
  2. Step 2: Convert to fraction form
    15,516/17,772 = 17,772/x
  3. Step 3: Cross multiply
    15,516x = 17,772 × 17,772
  4. Step 4: Simplify right side
    15,516x = 315,843,984
  5. Step 5: Solve for x
    x = 315,843,984/15,516
  6. Step 6: Final answer
    x = 20,356.02

Related Problems

Find third proportional to 7,758 and 8,886
Half scale
Find third proportional to 31,032 and 35,544
Double scale
Find third proportional to 15,518 and 17,774
Similar ratio
Find third proportional to 23,274 and 26,658
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.