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Finding the Fourth Proportional to 28,893, 43,339.50 and 7,005

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Solution

The fourth proportional to 28,893, 43,339.50 and 7,005 is: 10,507.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,893 : 43,339.50 = 7,005 : x
  2. Step 2: Convert to fraction form
    28,893/43,339.50 = 7,005/x
  3. Step 3: Cross multiply
    28,893x = 43,339.50 × 7,005
  4. Step 4: Simplify right side
    28,893x = 303,593,197.50
  5. Step 5: Solve for x
    x = 303,593,197.50/28,893
  6. Step 6: Final answer
    x = 10,507.50

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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.