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Finding the Fourth Proportional to 19,200.60, 28,771.68 and 14,247

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Solution

The fourth proportional to 19,200.60, 28,771.68 and 14,247 is: 21,348.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,200.60 : 28,771.68 = 14,247 : x
  2. Step 2: Convert to fraction form
    19,200.60/28,771.68 = 14,247/x
  3. Step 3: Cross multiply
    19,200.60x = 28,771.68 × 14,247
  4. Step 4: Simplify right side
    19,200.60x = 409,910,124.96
  5. Step 5: Solve for x
    x = 409,910,124.96/19,200.60
  6. Step 6: Final answer
    x = 21,348.82

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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.