Home / 87-130.50-22.88

Finding the Fourth Proportional to 87, 130.50 and 22.88

Calculator

Solution

The fourth proportional to 87, 130.50 and 22.88 is: 34.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87 : 130.50 = 22.88 : x
  2. Step 2: Convert to fraction form
    87/130.50 = 22.88/x
  3. Step 3: Cross multiply
    87x = 130.50 × 22.88
  4. Step 4: Simplify right side
    87x = 2,985.19
  5. Step 5: Solve for x
    x = 2,985.19/87
  6. Step 6: Final answer
    x = 34.31

Related Problems

Find fourth proportional to 43.50, 65.25 and 11.44
Half scale
Find fourth proportional to 174, 261 and 45.75
Double scale
Find fourth proportional to 88, 132 and 23.88
Similar ratio
Find fourth proportional to 130.50, 195.75 and 34.31
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.