Home / 31,318.44-46,992.78-13,785.96

Finding the Fourth Proportional to 31,318.44, 46,992.78 and 13,785.96

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Solution

The fourth proportional to 31,318.44, 46,992.78 and 13,785.96 is: 20,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,318.44 : 46,992.78 = 13,785.96 : x
  2. Step 2: Convert to fraction form
    31,318.44/46,992.78 = 13,785.96/x
  3. Step 3: Cross multiply
    31,318.44x = 46,992.78 × 13,785.96
  4. Step 4: Simplify right side
    31,318.44x = 647,840,585.37
  5. Step 5: Solve for x
    x = 647,840,585.37/31,318.44
  6. Step 6: Final answer
    x = 20,685.60

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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.