Home / 31,286.78-46,930.33-7,913.24

Finding the Fourth Proportional to 31,286.78, 46,930.33 and 7,913.24

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Solution

The fourth proportional to 31,286.78, 46,930.33 and 7,913.24 is: 11,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,286.78 : 46,930.33 = 7,913.24 : x
  2. Step 2: Convert to fraction form
    31,286.78/46,930.33 = 7,913.24/x
  3. Step 3: Cross multiply
    31,286.78x = 46,930.33 × 7,913.24
  4. Step 4: Simplify right side
    31,286.78x = 371,370,964.57
  5. Step 5: Solve for x
    x = 371,370,964.57/31,286.78
  6. Step 6: Final answer
    x = 11,869.90

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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.