Home / 8,818-18,890

Finding the Third Proportional to 8,818 and 18,890

Calculator

Solution

The third proportional to 8,818 and 18,890 is: 40,466.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,818 : 18,890 = 18,890 : x
  2. Step 2: Convert to fraction form
    8,818/18,890 = 18,890/x
  3. Step 3: Cross multiply
    8,818x = 18,890 × 18,890
  4. Step 4: Simplify right side
    8,818x = 356,832,100
  5. Step 5: Solve for x
    x = 356,832,100/8,818
  6. Step 6: Final answer
    x = 40,466.33

Related Problems

Find third proportional to 4,409 and 9,445
Half scale
Find third proportional to 17,636 and 37,780
Double scale
Find third proportional to 8,820 and 18,894
Similar ratio
Find third proportional to 13,227 and 28,335
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.