Home / 87,180-130,770-21,516

Finding the Fourth Proportional to 87,180, 130,770 and 21,516

Calculator

Solution

The fourth proportional to 87,180, 130,770 and 21,516 is: 32,274

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,180 : 130,770 = 21,516 : x
  2. Step 2: Convert to fraction form
    87,180/130,770 = 21,516/x
  3. Step 3: Cross multiply
    87,180x = 130,770 × 21,516
  4. Step 4: Simplify right side
    87,180x = 2,813,647,320
  5. Step 5: Solve for x
    x = 2,813,647,320/87,180
  6. Step 6: Final answer
    x = 32,274

Related Problems

Find fourth proportional to 43,590, 65,385 and 10,758
Half scale
Find fourth proportional to 174,360, 261,540 and 43,032
Double scale
Find fourth proportional to 87,181, 130,771.50 and 21,517
Similar ratio
Find fourth proportional to 130,770, 196,155 and 32,274
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.