Home / 12,648-18,972-4,440

Finding the Fourth Proportional to 12,648, 18,972 and 4,440

Calculator

Solution

The fourth proportional to 12,648, 18,972 and 4,440 is: 6,660

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,648 : 18,972 = 4,440 : x
  2. Step 2: Convert to fraction form
    12,648/18,972 = 4,440/x
  3. Step 3: Cross multiply
    12,648x = 18,972 × 4,440
  4. Step 4: Simplify right side
    12,648x = 84,235,680
  5. Step 5: Solve for x
    x = 84,235,680/12,648
  6. Step 6: Final answer
    x = 6,660

Related Problems

Find fourth proportional to 6,324, 9,486 and 2,220
Half scale
Find fourth proportional to 25,296, 37,944 and 8,880
Double scale
Find fourth proportional to 12,649, 18,973.50 and 4,441
Similar ratio
Find fourth proportional to 18,972, 28,458 and 6,660
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.