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Finding the Fourth Proportional to 17,317.60, 25,911.60 and 11,485.60

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Solution

The fourth proportional to 17,317.60, 25,911.60 and 11,485.60 is: 17,185.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,317.60 : 25,911.60 = 11,485.60 : x
  2. Step 2: Convert to fraction form
    17,317.60/25,911.60 = 11,485.60/x
  3. Step 3: Cross multiply
    17,317.60x = 25,911.60 × 11,485.60
  4. Step 4: Simplify right side
    17,317.60x = 297,610,272.96
  5. Step 5: Solve for x
    x = 297,610,272.96/17,317.60
  6. Step 6: Final answer
    x = 17,185.42

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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.