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Finding the Fourth Proportional to 18,387.23, 27,583.88 and 7,293.98

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Solution

The fourth proportional to 18,387.23, 27,583.88 and 7,293.98 is: 10,942.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.23 : 27,583.88 = 7,293.98 : x
  2. Step 2: Convert to fraction form
    18,387.23/27,583.88 = 7,293.98/x
  3. Step 3: Cross multiply
    18,387.23x = 27,583.88 × 7,293.98
  4. Step 4: Simplify right side
    18,387.23x = 201,196,232.57
  5. Step 5: Solve for x
    x = 201,196,232.57/18,387.23
  6. Step 6: Final answer
    x = 10,942.17

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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.