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Finding the Fourth Proportional to 12,658.39, 18,993.05 and 4,865.38

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Solution

The fourth proportional to 12,658.39, 18,993.05 and 4,865.38 is: 7,300.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.39 : 18,993.05 = 4,865.38 : x
  2. Step 2: Convert to fraction form
    12,658.39/18,993.05 = 4,865.38/x
  3. Step 3: Cross multiply
    12,658.39x = 18,993.05 × 4,865.38
  4. Step 4: Simplify right side
    12,658.39x = 92,408,405.61
  5. Step 5: Solve for x
    x = 92,408,405.61/12,658.39
  6. Step 6: Final answer
    x = 7,300.17

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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.