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Finding the Fourth Proportional to 28,891, 43,336.50 and 7,003

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Solution

The fourth proportional to 28,891, 43,336.50 and 7,003 is: 10,504.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,891 : 43,336.50 = 7,003 : x
  2. Step 2: Convert to fraction form
    28,891/43,336.50 = 7,003/x
  3. Step 3: Cross multiply
    28,891x = 43,336.50 × 7,003
  4. Step 4: Simplify right side
    28,891x = 303,485,509.50
  5. Step 5: Solve for x
    x = 303,485,509.50/28,891
  6. Step 6: Final answer
    x = 10,504.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.