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Finding the Fourth Proportional to 19,267, 28,900.50 and 5,416

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Solution

The fourth proportional to 19,267, 28,900.50 and 5,416 is: 8,124

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,267 : 28,900.50 = 5,416 : x
  2. Step 2: Convert to fraction form
    19,267/28,900.50 = 5,416/x
  3. Step 3: Cross multiply
    19,267x = 28,900.50 × 5,416
  4. Step 4: Simplify right side
    19,267x = 156,525,108
  5. Step 5: Solve for x
    x = 156,525,108/19,267
  6. Step 6: Final answer
    x = 8,124

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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.