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Finding the Fourth Proportional to 19,203.60, 28,821.60 and 9,351.30

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Solution

The fourth proportional to 19,203.60, 28,821.60 and 9,351.30 is: 14,034.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,203.60 : 28,821.60 = 9,351.30 : x
  2. Step 2: Convert to fraction form
    19,203.60/28,821.60 = 9,351.30/x
  3. Step 3: Cross multiply
    19,203.60x = 28,821.60 × 9,351.30
  4. Step 4: Simplify right side
    19,203.60x = 269,519,428.08
  5. Step 5: Solve for x
    x = 269,519,428.08/19,203.60
  6. Step 6: Final answer
    x = 14,034.84

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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.