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Finding the Fourth Proportional to 18,429.00, 27,601.95 and 12,907.00

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Solution

The fourth proportional to 18,429.00, 27,601.95 and 12,907.00 is: 19,331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.00 : 27,601.95 = 12,907.00 : x
  2. Step 2: Convert to fraction form
    18,429.00/27,601.95 = 12,907.00/x
  3. Step 3: Cross multiply
    18,429.00x = 27,601.95 × 12,907.00
  4. Step 4: Simplify right side
    18,429.00x = 356,258,223.69
  5. Step 5: Solve for x
    x = 356,258,223.69/18,429.00
  6. Step 6: Final answer
    x = 19,331.39

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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.