Home / 12,288-18,432-4,080

Finding the Fourth Proportional to 12,288, 18,432 and 4,080

Calculator

Solution

The fourth proportional to 12,288, 18,432 and 4,080 is: 6,120

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288 : 18,432 = 4,080 : x
  2. Step 2: Convert to fraction form
    12,288/18,432 = 4,080/x
  3. Step 3: Cross multiply
    12,288x = 18,432 × 4,080
  4. Step 4: Simplify right side
    12,288x = 75,202,560
  5. Step 5: Solve for x
    x = 75,202,560/12,288
  6. Step 6: Final answer
    x = 6,120

Related Problems

Find fourth proportional to 6,144, 9,216 and 2,040
Half scale
Find fourth proportional to 24,576, 36,864 and 8,160
Double scale
Find fourth proportional to 12,289, 18,433.50 and 4,081
Similar ratio
Find fourth proportional to 18,432, 27,648 and 6,120
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.