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Finding the Fourth Proportional to 19,326, 26,671.56 and 12,249.84

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Solution

The fourth proportional to 19,326, 26,671.56 and 12,249.84 is: 16,905.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,326 : 26,671.56 = 12,249.84 : x
  2. Step 2: Convert to fraction form
    19,326/26,671.56 = 12,249.84/x
  3. Step 3: Cross multiply
    19,326x = 26,671.56 × 12,249.84
  4. Step 4: Simplify right side
    19,326x = 326,722,342.55
  5. Step 5: Solve for x
    x = 326,722,342.55/19,326
  6. Step 6: Final answer
    x = 16,905.84

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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.