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Finding the Fourth Proportional to 28,889.60, 43,353.60 and 16,409.60

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Solution

The fourth proportional to 28,889.60, 43,353.60 and 16,409.60 is: 24,625.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,889.60 : 43,353.60 = 16,409.60 : x
  2. Step 2: Convert to fraction form
    28,889.60/43,353.60 = 16,409.60/x
  3. Step 3: Cross multiply
    28,889.60x = 43,353.60 × 16,409.60
  4. Step 4: Simplify right side
    28,889.60x = 711,415,234.56
  5. Step 5: Solve for x
    x = 711,415,234.56/28,889.60
  6. Step 6: Final answer
    x = 24,625.31

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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.