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Finding the Fourth Proportional to 8,894.83, 13,316.32 and 8,557.87

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Solution

The fourth proportional to 8,894.83, 13,316.32 and 8,557.87 is: 12,811.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,894.83 : 13,316.32 = 8,557.87 : x
  2. Step 2: Convert to fraction form
    8,894.83/13,316.32 = 8,557.87/x
  3. Step 3: Cross multiply
    8,894.83x = 13,316.32 × 8,557.87
  4. Step 4: Simplify right side
    8,894.83x = 113,959,335.44
  5. Step 5: Solve for x
    x = 113,959,335.44/8,894.83
  6. Step 6: Final answer
    x = 12,811.86

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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.