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Finding the Fourth Proportional to 18,588.69, 27,875.97 and 7,491.60

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Solution

The fourth proportional to 18,588.69, 27,875.97 and 7,491.60 is: 11,234.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,588.69 : 27,875.97 = 7,491.60 : x
  2. Step 2: Convert to fraction form
    18,588.69/27,875.97 = 7,491.60/x
  3. Step 3: Cross multiply
    18,588.69x = 27,875.97 × 7,491.60
  4. Step 4: Simplify right side
    18,588.69x = 208,835,616.85
  5. Step 5: Solve for x
    x = 208,835,616.85/18,588.69
  6. Step 6: Final answer
    x = 11,234.55

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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.