Home / 18,858-28,890

Finding the Third Proportional to 18,858 and 28,890

Calculator

Solution

The third proportional to 18,858 and 28,890 is: 44,258.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858 : 28,890 = 28,890 : x
  2. Step 2: Convert to fraction form
    18,858/28,890 = 28,890/x
  3. Step 3: Cross multiply
    18,858x = 28,890 × 28,890
  4. Step 4: Simplify right side
    18,858x = 834,632,100
  5. Step 5: Solve for x
    x = 834,632,100/18,858
  6. Step 6: Final answer
    x = 44,258.78

Related Problems

Find third proportional to 9,429 and 14,445
Half scale
Find third proportional to 37,716 and 57,780
Double scale
Find third proportional to 18,860 and 28,893
Similar ratio
Find third proportional to 28,287 and 43,335
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.