Home / 20,702.44-31,046.37-6,661.90

Finding the Fourth Proportional to 20,702.44, 31,046.37 and 6,661.90

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Solution

The fourth proportional to 20,702.44, 31,046.37 and 6,661.90 is: 9,990.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.44 : 31,046.37 = 6,661.90 : x
  2. Step 2: Convert to fraction form
    20,702.44/31,046.37 = 6,661.90/x
  3. Step 3: Cross multiply
    20,702.44x = 31,046.37 × 6,661.90
  4. Step 4: Simplify right side
    20,702.44x = 206,827,812.30
  5. Step 5: Solve for x
    x = 206,827,812.30/20,702.44
  6. Step 6: Final answer
    x = 9,990.50

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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.