Home / 57,520-86,280-18,608

Finding the Fourth Proportional to 57,520, 86,280 and 18,608

Calculator

Solution

The fourth proportional to 57,520, 86,280 and 18,608 is: 27,912

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,520 : 86,280 = 18,608 : x
  2. Step 2: Convert to fraction form
    57,520/86,280 = 18,608/x
  3. Step 3: Cross multiply
    57,520x = 86,280 × 18,608
  4. Step 4: Simplify right side
    57,520x = 1,605,498,240
  5. Step 5: Solve for x
    x = 1,605,498,240/57,520
  6. Step 6: Final answer
    x = 27,912

Related Problems

Find fourth proportional to 28,760, 43,140 and 9,304
Half scale
Find fourth proportional to 115,040, 172,560 and 37,216
Double scale
Find fourth proportional to 57,521, 86,281.50 and 18,609
Similar ratio
Find fourth proportional to 86,280, 129,420 and 27,912
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.