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Finding the Fourth Proportional to 13,097.74, 18,068.94 and 7,789.54

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Solution

The fourth proportional to 13,097.74, 18,068.94 and 7,789.54 is: 10,746.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,097.74 : 18,068.94 = 7,789.54 : x
  2. Step 2: Convert to fraction form
    13,097.74/18,068.94 = 7,789.54/x
  3. Step 3: Cross multiply
    13,097.74x = 18,068.94 × 7,789.54
  4. Step 4: Simplify right side
    13,097.74x = 140,748,730.89
  5. Step 5: Solve for x
    x = 140,748,730.89/13,097.74
  6. Step 6: Final answer
    x = 10,746.03

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