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Finding the Fourth Proportional to 8,900.88, 13,302 and 8,388.72

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Solution

The fourth proportional to 8,900.88, 13,302 and 8,388.72 is: 12,536.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,900.88 : 13,302 = 8,388.72 : x
  2. Step 2: Convert to fraction form
    8,900.88/13,302 = 8,388.72/x
  3. Step 3: Cross multiply
    8,900.88x = 13,302 × 8,388.72
  4. Step 4: Simplify right side
    8,900.88x = 111,586,753.44
  5. Step 5: Solve for x
    x = 111,586,753.44/8,900.88
  6. Step 6: Final answer
    x = 12,536.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.