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Finding the Fourth Proportional to 27,299.60, 40,942.20 and 8,579.60

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Solution

The fourth proportional to 27,299.60, 40,942.20 and 8,579.60 is: 12,867.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,299.60 : 40,942.20 = 8,579.60 : x
  2. Step 2: Convert to fraction form
    27,299.60/40,942.20 = 8,579.60/x
  3. Step 3: Cross multiply
    27,299.60x = 40,942.20 × 8,579.60
  4. Step 4: Simplify right side
    27,299.60x = 351,267,699.12
  5. Step 5: Solve for x
    x = 351,267,699.12/27,299.60
  6. Step 6: Final answer
    x = 12,867.14

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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.