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Finding the Fourth Proportional to 18,308.72, 27,463.08 and 8,442.62

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Solution

The fourth proportional to 18,308.72, 27,463.08 and 8,442.62 is: 12,663.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,308.72 : 27,463.08 = 8,442.62 : x
  2. Step 2: Convert to fraction form
    18,308.72/27,463.08 = 8,442.62/x
  3. Step 3: Cross multiply
    18,308.72x = 27,463.08 × 8,442.62
  4. Step 4: Simplify right side
    18,308.72x = 231,860,289.37
  5. Step 5: Solve for x
    x = 231,860,289.37/18,308.72
  6. Step 6: Final answer
    x = 12,663.93

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Similar ratio
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1.5x scale

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.