Home / 31,791.14-47,702.20-13,076.79

Finding the Fourth Proportional to 31,791.14, 47,702.20 and 13,076.79

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Solution

The fourth proportional to 31,791.14, 47,702.20 and 13,076.79 is: 19,621.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,791.14 : 47,702.20 = 13,076.79 : x
  2. Step 2: Convert to fraction form
    31,791.14/47,702.20 = 13,076.79/x
  3. Step 3: Cross multiply
    31,791.14x = 47,702.20 × 13,076.79
  4. Step 4: Simplify right side
    31,791.14x = 623,791,651.94
  5. Step 5: Solve for x
    x = 623,791,651.94/31,791.14
  6. Step 6: Final answer
    x = 19,621.56

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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.