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Finding the Fourth Proportional to 12,879.36, 19,299.36 and 9,576.48

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Solution

The fourth proportional to 12,879.36, 19,299.36 and 9,576.48 is: 14,350.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.36 : 19,299.36 = 9,576.48 : x
  2. Step 2: Convert to fraction form
    12,879.36/19,299.36 = 9,576.48/x
  3. Step 3: Cross multiply
    12,879.36x = 19,299.36 × 9,576.48
  4. Step 4: Simplify right side
    12,879.36x = 184,819,935.05
  5. Step 5: Solve for x
    x = 184,819,935.05/12,879.36
  6. Step 6: Final answer
    x = 14,350.09

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1.5x scale

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.