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Finding the Fourth Proportional to 28,784.64, 43,179.48 and 8,798.64

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Solution

The fourth proportional to 28,784.64, 43,179.48 and 8,798.64 is: 13,198.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,784.64 : 43,179.48 = 8,798.64 : x
  2. Step 2: Convert to fraction form
    28,784.64/43,179.48 = 8,798.64/x
  3. Step 3: Cross multiply
    28,784.64x = 43,179.48 × 8,798.64
  4. Step 4: Simplify right side
    28,784.64x = 379,920,699.91
  5. Step 5: Solve for x
    x = 379,920,699.91/28,784.64
  6. Step 6: Final answer
    x = 13,198.73

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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.