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Finding the Fourth Proportional to 18,843.84, 26,001.12 and 12,216

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Solution

The fourth proportional to 18,843.84, 26,001.12 and 12,216 is: 16,855.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,843.84 : 26,001.12 = 12,216 : x
  2. Step 2: Convert to fraction form
    18,843.84/26,001.12 = 12,216/x
  3. Step 3: Cross multiply
    18,843.84x = 26,001.12 × 12,216
  4. Step 4: Simplify right side
    18,843.84x = 317,629,681.92
  5. Step 5: Solve for x
    x = 317,629,681.92/18,843.84
  6. Step 6: Final answer
    x = 16,855.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.