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Finding the Fourth Proportional to 12,404.52, 18,607.58 and 5,479

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Solution

The fourth proportional to 12,404.52, 18,607.58 and 5,479 is: 8,218.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,404.52 : 18,607.58 = 5,479 : x
  2. Step 2: Convert to fraction form
    12,404.52/18,607.58 = 5,479/x
  3. Step 3: Cross multiply
    12,404.52x = 18,607.58 × 5,479
  4. Step 4: Simplify right side
    12,404.52x = 101,950,930.82
  5. Step 5: Solve for x
    x = 101,950,930.82/12,404.52
  6. Step 6: Final answer
    x = 8,218.85

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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.