Home / 38,403.68-57,611.60-13,443.12

Finding the Fourth Proportional to 38,403.68, 57,611.60 and 13,443.12

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Solution

The fourth proportional to 38,403.68, 57,611.60 and 13,443.12 is: 20,166.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,403.68 : 57,611.60 = 13,443.12 : x
  2. Step 2: Convert to fraction form
    38,403.68/57,611.60 = 13,443.12/x
  3. Step 3: Cross multiply
    38,403.68x = 57,611.60 × 13,443.12
  4. Step 4: Simplify right side
    38,403.68x = 774,479,584.98
  5. Step 5: Solve for x
    x = 774,479,584.98/38,403.68
  6. Step 6: Final answer
    x = 20,166.81

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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.