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Finding the Fourth Proportional to 19,201.50, 28,807.11 and 5,350.50

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Solution

The fourth proportional to 19,201.50, 28,807.11 and 5,350.50 is: 8,027.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,201.50 : 28,807.11 = 5,350.50 : x
  2. Step 2: Convert to fraction form
    19,201.50/28,807.11 = 5,350.50/x
  3. Step 3: Cross multiply
    19,201.50x = 28,807.11 × 5,350.50
  4. Step 4: Simplify right side
    19,201.50x = 154,132,442.06
  5. Step 5: Solve for x
    x = 154,132,442.06/19,201.50
  6. Step 6: Final answer
    x = 8,027.10

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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.