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Finding the Fourth Proportional to 8,961.63, 13,355.62 and 8,495.07

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Solution

The fourth proportional to 8,961.63, 13,355.62 and 8,495.07 is: 12,660.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.63 : 13,355.62 = 8,495.07 : x
  2. Step 2: Convert to fraction form
    8,961.63/13,355.62 = 8,495.07/x
  3. Step 3: Cross multiply
    8,961.63x = 13,355.62 × 8,495.07
  4. Step 4: Simplify right side
    8,961.63x = 113,456,817.54
  5. Step 5: Solve for x
    x = 113,456,817.54/8,961.63
  6. Step 6: Final answer
    x = 12,660.30

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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.