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Finding the Fourth Proportional to 18,743.31, 28,111.14 and 6,893.01

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Solution

The fourth proportional to 18,743.31, 28,111.14 and 6,893.01 is: 10,338.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.31 : 28,111.14 = 6,893.01 : x
  2. Step 2: Convert to fraction form
    18,743.31/28,111.14 = 6,893.01/x
  3. Step 3: Cross multiply
    18,743.31x = 28,111.14 × 6,893.01
  4. Step 4: Simplify right side
    18,743.31x = 193,770,369.13
  5. Step 5: Solve for x
    x = 193,770,369.13/18,743.31
  6. Step 6: Final answer
    x = 10,338.11

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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.