Home / 28,815.75-43,240.64-12,174.71

Finding the Fourth Proportional to 28,815.75, 43,240.64 and 12,174.71

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Solution

The fourth proportional to 28,815.75, 43,240.64 and 12,174.71 is: 18,269.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815.75 : 43,240.64 = 12,174.71 : x
  2. Step 2: Convert to fraction form
    28,815.75/43,240.64 = 12,174.71/x
  3. Step 3: Cross multiply
    28,815.75x = 43,240.64 × 12,174.71
  4. Step 4: Simplify right side
    28,815.75x = 526,442,252.21
  5. Step 5: Solve for x
    x = 526,442,252.21/28,815.75
  6. Step 6: Final answer
    x = 18,269.25

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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.