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Finding the Fourth Proportional to 31,654, 43,683.24 and 20,495.44

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Solution

The fourth proportional to 31,654, 43,683.24 and 20,495.44 is: 28,284.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,654 : 43,683.24 = 20,495.44 : x
  2. Step 2: Convert to fraction form
    31,654/43,683.24 = 20,495.44/x
  3. Step 3: Cross multiply
    31,654x = 43,683.24 × 20,495.44
  4. Step 4: Simplify right side
    31,654x = 895,307,224.43
  5. Step 5: Solve for x
    x = 895,307,224.43/31,654
  6. Step 6: Final answer
    x = 28,284.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.