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Finding the Fourth Proportional to 18,299.56, 27,442.84 and 7,905.64

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Solution

The fourth proportional to 18,299.56, 27,442.84 and 7,905.64 is: 11,855.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.56 : 27,442.84 = 7,905.64 : x
  2. Step 2: Convert to fraction form
    18,299.56/27,442.84 = 7,905.64/x
  3. Step 3: Cross multiply
    18,299.56x = 27,442.84 × 7,905.64
  4. Step 4: Simplify right side
    18,299.56x = 216,953,213.62
  5. Step 5: Solve for x
    x = 216,953,213.62/18,299.56
  6. Step 6: Final answer
    x = 11,855.65

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1.5x scale

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.