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Finding the Fourth Proportional to 12,868.54, 19,309.03 and 7,025.00

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Solution

The fourth proportional to 12,868.54, 19,309.03 and 7,025.00 is: 10,540.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,868.54 : 19,309.03 = 7,025.00 : x
  2. Step 2: Convert to fraction form
    12,868.54/19,309.03 = 7,025.00/x
  3. Step 3: Cross multiply
    12,868.54x = 19,309.03 × 7,025.00
  4. Step 4: Simplify right side
    12,868.54x = 135,645,821.64
  5. Step 5: Solve for x
    x = 135,645,821.64/12,868.54
  6. Step 6: Final answer
    x = 10,540.89

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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.