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Finding the Fourth Proportional to 16,894.20, 25,365.60 and 13,200.60

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Solution

The fourth proportional to 16,894.20, 25,365.60 and 13,200.60 is: 19,819.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,894.20 : 25,365.60 = 13,200.60 : x
  2. Step 2: Convert to fraction form
    16,894.20/25,365.60 = 13,200.60/x
  3. Step 3: Cross multiply
    16,894.20x = 25,365.60 × 13,200.60
  4. Step 4: Simplify right side
    16,894.20x = 334,841,139.36
  5. Step 5: Solve for x
    x = 334,841,139.36/16,894.20
  6. Step 6: Final answer
    x = 19,819.89

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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.