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Finding the Fourth Proportional to 28,905.60, 43,359.60 and 9,183.60

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Solution

The fourth proportional to 28,905.60, 43,359.60 and 9,183.60 is: 13,775.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.60 : 43,359.60 = 9,183.60 : x
  2. Step 2: Convert to fraction form
    28,905.60/43,359.60 = 9,183.60/x
  3. Step 3: Cross multiply
    28,905.60x = 43,359.60 × 9,183.60
  4. Step 4: Simplify right side
    28,905.60x = 398,197,222.56
  5. Step 5: Solve for x
    x = 398,197,222.56/28,905.60
  6. Step 6: Final answer
    x = 13,775.78

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1.5x scale

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.