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Finding the Fourth Proportional to 19,590, 29,375.90 and 7,108.44

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Solution

The fourth proportional to 19,590, 29,375.90 and 7,108.44 is: 10,659.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,590 : 29,375.90 = 7,108.44 : x
  2. Step 2: Convert to fraction form
    19,590/29,375.90 = 7,108.44/x
  3. Step 3: Cross multiply
    19,590x = 29,375.90 × 7,108.44
  4. Step 4: Simplify right side
    19,590x = 208,816,822.60
  5. Step 5: Solve for x
    x = 208,816,822.60/19,590
  6. Step 6: Final answer
    x = 10,659.36

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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.