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Finding the Fourth Proportional to 12,226, 18,339 and 4,930

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Solution

The fourth proportional to 12,226, 18,339 and 4,930 is: 7,395

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,226 : 18,339 = 4,930 : x
  2. Step 2: Convert to fraction form
    12,226/18,339 = 4,930/x
  3. Step 3: Cross multiply
    12,226x = 18,339 × 4,930
  4. Step 4: Simplify right side
    12,226x = 90,411,270
  5. Step 5: Solve for x
    x = 90,411,270/12,226
  6. Step 6: Final answer
    x = 7,395

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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.