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Finding the Fourth Proportional to 18,293.23, 27,436.64 and 5,142.47

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Solution

The fourth proportional to 18,293.23, 27,436.64 and 5,142.47 is: 7,712.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,293.23 : 27,436.64 = 5,142.47 : x
  2. Step 2: Convert to fraction form
    18,293.23/27,436.64 = 5,142.47/x
  3. Step 3: Cross multiply
    18,293.23x = 27,436.64 × 5,142.47
  4. Step 4: Simplify right side
    18,293.23x = 141,092,179.55
  5. Step 5: Solve for x
    x = 141,092,179.55/18,293.23
  6. Step 6: Final answer
    x = 7,712.81

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.