Home / 18,144-28,620

Finding the Third Proportional to 18,144 and 28,620

Calculator

Solution

The third proportional to 18,144 and 28,620 is: 45,144.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,144 : 28,620 = 28,620 : x
  2. Step 2: Convert to fraction form
    18,144/28,620 = 28,620/x
  3. Step 3: Cross multiply
    18,144x = 28,620 × 28,620
  4. Step 4: Simplify right side
    18,144x = 819,104,400
  5. Step 5: Solve for x
    x = 819,104,400/18,144
  6. Step 6: Final answer
    x = 45,144.64

Related Problems

Find third proportional to 9,072 and 14,310
Half scale
Find third proportional to 36,288 and 57,240
Double scale
Find third proportional to 18,146 and 28,623
Similar ratio
Find third proportional to 27,216 and 42,930
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.