Home / 87,350-131,025-21,686

Finding the Fourth Proportional to 87,350, 131,025 and 21,686

Calculator

Solution

The fourth proportional to 87,350, 131,025 and 21,686 is: 32,529

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,350 : 131,025 = 21,686 : x
  2. Step 2: Convert to fraction form
    87,350/131,025 = 21,686/x
  3. Step 3: Cross multiply
    87,350x = 131,025 × 21,686
  4. Step 4: Simplify right side
    87,350x = 2,841,408,150
  5. Step 5: Solve for x
    x = 2,841,408,150/87,350
  6. Step 6: Final answer
    x = 32,529

Related Problems

Find fourth proportional to 43,675, 65,512.50 and 10,843
Half scale
Find fourth proportional to 174,700, 262,050 and 43,372
Double scale
Find fourth proportional to 87,351, 131,026.50 and 21,687
Similar ratio
Find fourth proportional to 131,025, 196,537.50 and 32,529
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.