Home / 18,128-27,192-6,441.68

Finding the Fourth Proportional to 18,128, 27,192 and 6,441.68

Calculator

Solution

The fourth proportional to 18,128, 27,192 and 6,441.68 is: 9,662.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128 : 27,192 = 6,441.68 : x
  2. Step 2: Convert to fraction form
    18,128/27,192 = 6,441.68/x
  3. Step 3: Cross multiply
    18,128x = 27,192 × 6,441.68
  4. Step 4: Simplify right side
    18,128x = 175,162,162.56
  5. Step 5: Solve for x
    x = 175,162,162.56/18,128
  6. Step 6: Final answer
    x = 9,662.52

Related Problems

Find fourth proportional to 9,064, 13,596 and 3,220.84
Half scale
Find fourth proportional to 36,256, 54,384 and 12,883.36
Double scale
Find fourth proportional to 18,129, 27,193.50 and 6,442.68
Similar ratio
Find fourth proportional to 27,192, 40,788 and 9,662.52
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.