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Finding the Fourth Proportional to 28,999.86, 43,500.05 and 11,469.68

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Solution

The fourth proportional to 28,999.86, 43,500.05 and 11,469.68 is: 17,204.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,999.86 : 43,500.05 = 11,469.68 : x
  2. Step 2: Convert to fraction form
    28,999.86/43,500.05 = 11,469.68/x
  3. Step 3: Cross multiply
    28,999.86x = 43,500.05 × 11,469.68
  4. Step 4: Simplify right side
    28,999.86x = 498,931,704.89
  5. Step 5: Solve for x
    x = 498,931,704.89/28,999.86
  6. Step 6: Final answer
    x = 17,204.62

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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.