Home / 20,500-30,750-5,908

Finding the Fourth Proportional to 20,500, 30,750 and 5,908

Calculator

Solution

The fourth proportional to 20,500, 30,750 and 5,908 is: 8,862

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500 : 30,750 = 5,908 : x
  2. Step 2: Convert to fraction form
    20,500/30,750 = 5,908/x
  3. Step 3: Cross multiply
    20,500x = 30,750 × 5,908
  4. Step 4: Simplify right side
    20,500x = 181,671,000
  5. Step 5: Solve for x
    x = 181,671,000/20,500
  6. Step 6: Final answer
    x = 8,862

Related Problems

Find fourth proportional to 10,250, 15,375 and 2,954
Half scale
Find fourth proportional to 41,000, 61,500 and 11,816
Double scale
Find fourth proportional to 20,501, 30,751.50 and 5,909
Similar ratio
Find fourth proportional to 30,750, 46,125 and 8,862
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.