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Finding the Fourth Proportional to 11,563.76, 15,958.11 and 6,783.88

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Solution

The fourth proportional to 11,563.76, 15,958.11 and 6,783.88 is: 9,361.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,563.76 : 15,958.11 = 6,783.88 : x
  2. Step 2: Convert to fraction form
    11,563.76/15,958.11 = 6,783.88/x
  3. Step 3: Cross multiply
    11,563.76x = 15,958.11 × 6,783.88
  4. Step 4: Simplify right side
    11,563.76x = 108,257,873.85
  5. Step 5: Solve for x
    x = 108,257,873.85/11,563.76
  6. Step 6: Final answer
    x = 9,361.82

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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.