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Finding the Fourth Proportional to 13,343.58, 18,413.64 and 7,375.32

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Solution

The fourth proportional to 13,343.58, 18,413.64 and 7,375.32 is: 10,177.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,343.58 : 18,413.64 = 7,375.32 : x
  2. Step 2: Convert to fraction form
    13,343.58/18,413.64 = 7,375.32/x
  3. Step 3: Cross multiply
    13,343.58x = 18,413.64 × 7,375.32
  4. Step 4: Simplify right side
    13,343.58x = 135,806,487.36
  5. Step 5: Solve for x
    x = 135,806,487.36/13,343.58
  6. Step 6: Final answer
    x = 10,177.67

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1.5x scale

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.