Home / 20,717.18-31,076.09-5,134.82

Finding the Fourth Proportional to 20,717.18, 31,076.09 and 5,134.82

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Solution

The fourth proportional to 20,717.18, 31,076.09 and 5,134.82 is: 7,702.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.18 : 31,076.09 = 5,134.82 : x
  2. Step 2: Convert to fraction form
    20,717.18/31,076.09 = 5,134.82/x
  3. Step 3: Cross multiply
    20,717.18x = 31,076.09 × 5,134.82
  4. Step 4: Simplify right side
    20,717.18x = 159,570,102.78
  5. Step 5: Solve for x
    x = 159,570,102.78/20,717.18
  6. Step 6: Final answer
    x = 7,702.31

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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.