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Finding the Fourth Proportional to 8,907.54, 13,286.03 and 8,393.58

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Solution

The fourth proportional to 8,907.54, 13,286.03 and 8,393.58 is: 12,519.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.54 : 13,286.03 = 8,393.58 : x
  2. Step 2: Convert to fraction form
    8,907.54/13,286.03 = 8,393.58/x
  3. Step 3: Cross multiply
    8,907.54x = 13,286.03 × 8,393.58
  4. Step 4: Simplify right side
    8,907.54x = 111,517,313.72
  5. Step 5: Solve for x
    x = 111,517,313.72/8,907.54
  6. Step 6: Final answer
    x = 12,519.43

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1.5x scale

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.