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Finding the Fourth Proportional to 10,893.72, 15,015.06 and 8,340.60

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Solution

The fourth proportional to 10,893.72, 15,015.06 and 8,340.60 is: 11,496.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,893.72 : 15,015.06 = 8,340.60 : x
  2. Step 2: Convert to fraction form
    10,893.72/15,015.06 = 8,340.60/x
  3. Step 3: Cross multiply
    10,893.72x = 15,015.06 × 8,340.60
  4. Step 4: Simplify right side
    10,893.72x = 125,234,609.44
  5. Step 5: Solve for x
    x = 125,234,609.44/10,893.72
  6. Step 6: Final answer
    x = 11,496.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.