Home / 20,764-31,146-6,172

Finding the Fourth Proportional to 20,764, 31,146 and 6,172

Calculator

Solution

The fourth proportional to 20,764, 31,146 and 6,172 is: 9,258

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764 : 31,146 = 6,172 : x
  2. Step 2: Convert to fraction form
    20,764/31,146 = 6,172/x
  3. Step 3: Cross multiply
    20,764x = 31,146 × 6,172
  4. Step 4: Simplify right side
    20,764x = 192,233,112
  5. Step 5: Solve for x
    x = 192,233,112/20,764
  6. Step 6: Final answer
    x = 9,258

Related Problems

Find fourth proportional to 10,382, 15,573 and 3,086
Half scale
Find fourth proportional to 41,528, 62,292 and 12,344
Double scale
Find fourth proportional to 20,765, 31,147.50 and 6,173
Similar ratio
Find fourth proportional to 31,146, 46,719 and 9,258
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.