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Finding the Fourth Proportional to 28,551.74, 42,827.60 and 8,829.86

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Solution

The fourth proportional to 28,551.74, 42,827.60 and 8,829.86 is: 13,244.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,551.74 : 42,827.60 = 8,829.86 : x
  2. Step 2: Convert to fraction form
    28,551.74/42,827.60 = 8,829.86/x
  3. Step 3: Cross multiply
    28,551.74x = 42,827.60 × 8,829.86
  4. Step 4: Simplify right side
    28,551.74x = 378,161,520.07
  5. Step 5: Solve for x
    x = 378,161,520.07/28,551.74
  6. Step 6: Final answer
    x = 13,244.78

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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.