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Finding the Fourth Proportional to 12,896.70, 19,348.29 and 5,104.50

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Solution

The fourth proportional to 12,896.70, 19,348.29 and 5,104.50 is: 7,658.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,896.70 : 19,348.29 = 5,104.50 : x
  2. Step 2: Convert to fraction form
    12,896.70/19,348.29 = 5,104.50/x
  3. Step 3: Cross multiply
    12,896.70x = 19,348.29 × 5,104.50
  4. Step 4: Simplify right side
    12,896.70x = 98,763,346.31
  5. Step 5: Solve for x
    x = 98,763,346.31/12,896.70
  6. Step 6: Final answer
    x = 7,658.03

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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.