Home / 8,388-20,178

Finding the Third Proportional to 8,388 and 20,178

Calculator

Solution

The third proportional to 8,388 and 20,178 is: 48,539.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,388 : 20,178 = 20,178 : x
  2. Step 2: Convert to fraction form
    8,388/20,178 = 20,178/x
  3. Step 3: Cross multiply
    8,388x = 20,178 × 20,178
  4. Step 4: Simplify right side
    8,388x = 407,151,684
  5. Step 5: Solve for x
    x = 407,151,684/8,388
  6. Step 6: Final answer
    x = 48,539.78

Related Problems

Find third proportional to 4,194 and 10,089
Half scale
Find third proportional to 16,776 and 40,356
Double scale
Find third proportional to 8,390 and 20,183
Similar ratio
Find third proportional to 12,582 and 30,267
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.