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Finding the Fourth Proportional to 18,442.64, 27,704.88 and 11,427.84

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Solution

The fourth proportional to 18,442.64, 27,704.88 and 11,427.84 is: 17,167.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,442.64 : 27,704.88 = 11,427.84 : x
  2. Step 2: Convert to fraction form
    18,442.64/27,704.88 = 11,427.84/x
  3. Step 3: Cross multiply
    18,442.64x = 27,704.88 × 11,427.84
  4. Step 4: Simplify right side
    18,442.64x = 316,606,935.86
  5. Step 5: Solve for x
    x = 316,606,935.86/18,442.64
  6. Step 6: Final answer
    x = 17,167.12

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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.