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Finding the Fourth Proportional to 8,940.48, 13,491.12 and 8,631.60

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Solution

The fourth proportional to 8,940.48, 13,491.12 and 8,631.60 is: 13,025.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.48 : 13,491.12 = 8,631.60 : x
  2. Step 2: Convert to fraction form
    8,940.48/13,491.12 = 8,631.60/x
  3. Step 3: Cross multiply
    8,940.48x = 13,491.12 × 8,631.60
  4. Step 4: Simplify right side
    8,940.48x = 116,449,951.39
  5. Step 5: Solve for x
    x = 116,449,951.39/8,940.48
  6. Step 6: Final answer
    x = 13,025.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.