Home / 12,000-18,000-3,792

Finding the Fourth Proportional to 12,000, 18,000 and 3,792

Calculator

Solution

The fourth proportional to 12,000, 18,000 and 3,792 is: 5,688

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000 : 18,000 = 3,792 : x
  2. Step 2: Convert to fraction form
    12,000/18,000 = 3,792/x
  3. Step 3: Cross multiply
    12,000x = 18,000 × 3,792
  4. Step 4: Simplify right side
    12,000x = 68,256,000
  5. Step 5: Solve for x
    x = 68,256,000/12,000
  6. Step 6: Final answer
    x = 5,688

Related Problems

Find fourth proportional to 6,000, 9,000 and 1,896
Half scale
Find fourth proportional to 24,000, 36,000 and 7,584
Double scale
Find fourth proportional to 12,001, 18,001.50 and 3,793
Similar ratio
Find fourth proportional to 18,000, 27,000 and 5,688
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.