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Finding the Fourth Proportional to 13,873.18, 19,146.76 and 7,907

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Solution

The fourth proportional to 13,873.18, 19,146.76 and 7,907 is: 10,912.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,873.18 : 19,146.76 = 7,907 : x
  2. Step 2: Convert to fraction form
    13,873.18/19,146.76 = 7,907/x
  3. Step 3: Cross multiply
    13,873.18x = 19,146.76 × 7,907
  4. Step 4: Simplify right side
    13,873.18x = 151,393,431.32
  5. Step 5: Solve for x
    x = 151,393,431.32/13,873.18
  6. Step 6: Final answer
    x = 10,912.67

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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.