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Finding the Fourth Proportional to 17,930.50, 26,900.07 and 5,618.50

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Solution

The fourth proportional to 17,930.50, 26,900.07 and 5,618.50 is: 8,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,930.50 : 26,900.07 = 5,618.50 : x
  2. Step 2: Convert to fraction form
    17,930.50/26,900.07 = 5,618.50/x
  3. Step 3: Cross multiply
    17,930.50x = 26,900.07 × 5,618.50
  4. Step 4: Simplify right side
    17,930.50x = 151,138,043.30
  5. Step 5: Solve for x
    x = 151,138,043.30/17,930.50
  6. Step 6: Final answer
    x = 8,429.10

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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.