Home / 8,558-18,890

Finding the Third Proportional to 8,558 and 18,890

Calculator

Solution

The third proportional to 8,558 and 18,890 is: 41,695.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,558 : 18,890 = 18,890 : x
  2. Step 2: Convert to fraction form
    8,558/18,890 = 18,890/x
  3. Step 3: Cross multiply
    8,558x = 18,890 × 18,890
  4. Step 4: Simplify right side
    8,558x = 356,832,100
  5. Step 5: Solve for x
    x = 356,832,100/8,558
  6. Step 6: Final answer
    x = 41,695.73

Related Problems

Find third proportional to 4,279 and 9,445
Half scale
Find third proportional to 17,116 and 37,780
Double scale
Find third proportional to 8,560 and 18,894
Similar ratio
Find third proportional to 12,837 and 28,335
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.