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Finding the Fourth Proportional to 13,285.44, 18,333.48 and 7,317.12

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Solution

The fourth proportional to 13,285.44, 18,333.48 and 7,317.12 is: 10,097.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.44 : 18,333.48 = 7,317.12 : x
  2. Step 2: Convert to fraction form
    13,285.44/18,333.48 = 7,317.12/x
  3. Step 3: Cross multiply
    13,285.44x = 18,333.48 × 7,317.12
  4. Step 4: Simplify right side
    13,285.44x = 134,148,273.18
  5. Step 5: Solve for x
    x = 134,148,273.18/13,285.44
  6. Step 6: Final answer
    x = 10,097.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.