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Finding the Fourth Proportional to 19,251.60, 28,879.65 and 6,105.30

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Solution

The fourth proportional to 19,251.60, 28,879.65 and 6,105.30 is: 9,158.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,251.60 : 28,879.65 = 6,105.30 : x
  2. Step 2: Convert to fraction form
    19,251.60/28,879.65 = 6,105.30/x
  3. Step 3: Cross multiply
    19,251.60x = 28,879.65 × 6,105.30
  4. Step 4: Simplify right side
    19,251.60x = 176,318,927.15
  5. Step 5: Solve for x
    x = 176,318,927.15/19,251.60
  6. Step 6: Final answer
    x = 9,158.66

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.