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Finding the Fourth Proportional to 19,207.78, 28,819.32 and 9,345.94

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Solution

The fourth proportional to 19,207.78, 28,819.32 and 9,345.94 is: 14,022.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,207.78 : 28,819.32 = 9,345.94 : x
  2. Step 2: Convert to fraction form
    19,207.78/28,819.32 = 9,345.94/x
  3. Step 3: Cross multiply
    19,207.78x = 28,819.32 × 9,345.94
  4. Step 4: Simplify right side
    19,207.78x = 269,343,635.56
  5. Step 5: Solve for x
    x = 269,343,635.56/19,207.78
  6. Step 6: Final answer
    x = 14,022.63

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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.