Home / 31,907.94-47,789-15,279.65

Finding the Fourth Proportional to 31,907.94, 47,789 and 15,279.65

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Solution

The fourth proportional to 31,907.94, 47,789 and 15,279.65 is: 22,884.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,907.94 : 47,789 = 15,279.65 : x
  2. Step 2: Convert to fraction form
    31,907.94/47,789 = 15,279.65/x
  3. Step 3: Cross multiply
    31,907.94x = 47,789 × 15,279.65
  4. Step 4: Simplify right side
    31,907.94x = 730,199,193.85
  5. Step 5: Solve for x
    x = 730,199,193.85/31,907.94
  6. Step 6: Final answer
    x = 22,884.56

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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.