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Finding the Fourth Proportional to 27,078.67, 40,615.43 and 8,353.67

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Solution

The fourth proportional to 27,078.67, 40,615.43 and 8,353.67 is: 12,529.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,078.67 : 40,615.43 = 8,353.67 : x
  2. Step 2: Convert to fraction form
    27,078.67/40,615.43 = 8,353.67/x
  3. Step 3: Cross multiply
    27,078.67x = 40,615.43 × 8,353.67
  4. Step 4: Simplify right side
    27,078.67x = 339,287,857.36
  5. Step 5: Solve for x
    x = 339,287,857.36/27,078.67
  6. Step 6: Final answer
    x = 12,529.71

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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.