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Finding the Fourth Proportional to 26,662.40, 39,993.60 and 11,110.40

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Solution

The fourth proportional to 26,662.40, 39,993.60 and 11,110.40 is: 16,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,662.40 : 39,993.60 = 11,110.40 : x
  2. Step 2: Convert to fraction form
    26,662.40/39,993.60 = 11,110.40/x
  3. Step 3: Cross multiply
    26,662.40x = 39,993.60 × 11,110.40
  4. Step 4: Simplify right side
    26,662.40x = 444,344,893.44
  5. Step 5: Solve for x
    x = 444,344,893.44/26,662.40
  6. Step 6: Final answer
    x = 16,665.60

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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.