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Finding the Fourth Proportional to 8,466.60, 12,671.10 and 7,429.80

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Solution

The fourth proportional to 8,466.60, 12,671.10 and 7,429.80 is: 11,119.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,466.60 : 12,671.10 = 7,429.80 : x
  2. Step 2: Convert to fraction form
    8,466.60/12,671.10 = 7,429.80/x
  3. Step 3: Cross multiply
    8,466.60x = 12,671.10 × 7,429.80
  4. Step 4: Simplify right side
    8,466.60x = 94,143,738.78
  5. Step 5: Solve for x
    x = 94,143,738.78/8,466.60
  6. Step 6: Final answer
    x = 11,119.43

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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.