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Finding the Fourth Proportional to 19,007, 28,511.04 and 5,156

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Solution

The fourth proportional to 19,007, 28,511.04 and 5,156 is: 7,734.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,007 : 28,511.04 = 5,156 : x
  2. Step 2: Convert to fraction form
    19,007/28,511.04 = 5,156/x
  3. Step 3: Cross multiply
    19,007x = 28,511.04 × 5,156
  4. Step 4: Simplify right side
    19,007x = 147,002,922.24
  5. Step 5: Solve for x
    x = 147,002,922.24/19,007
  6. Step 6: Final answer
    x = 7,734.15

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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.