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Finding the Fourth Proportional to 27,879.45, 41,819.16 and 12,308.01

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Solution

The fourth proportional to 27,879.45, 41,819.16 and 12,308.01 is: 18,462.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,879.45 : 41,819.16 = 12,308.01 : x
  2. Step 2: Convert to fraction form
    27,879.45/41,819.16 = 12,308.01/x
  3. Step 3: Cross multiply
    27,879.45x = 41,819.16 × 12,308.01
  4. Step 4: Simplify right side
    27,879.45x = 514,710,639.47
  5. Step 5: Solve for x
    x = 514,710,639.47/27,879.45
  6. Step 6: Final answer
    x = 18,462.01

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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.