Home / 17,920-26,880-5,608

Finding the Fourth Proportional to 17,920, 26,880 and 5,608

Calculator

Solution

The fourth proportional to 17,920, 26,880 and 5,608 is: 8,412

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920 : 26,880 = 5,608 : x
  2. Step 2: Convert to fraction form
    17,920/26,880 = 5,608/x
  3. Step 3: Cross multiply
    17,920x = 26,880 × 5,608
  4. Step 4: Simplify right side
    17,920x = 150,743,040
  5. Step 5: Solve for x
    x = 150,743,040/17,920
  6. Step 6: Final answer
    x = 8,412

Related Problems

Find fourth proportional to 8,960, 13,440 and 2,804
Half scale
Find fourth proportional to 35,840, 53,760 and 11,216
Double scale
Find fourth proportional to 17,921, 26,881.50 and 5,609
Similar ratio
Find fourth proportional to 26,880, 40,320 and 8,412
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.