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Finding the Fourth Proportional to 25,631.60, 38,464.60 and 8,991.60

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Solution

The fourth proportional to 25,631.60, 38,464.60 and 8,991.60 is: 13,493.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,631.60 : 38,464.60 = 8,991.60 : x
  2. Step 2: Convert to fraction form
    25,631.60/38,464.60 = 8,991.60/x
  3. Step 3: Cross multiply
    25,631.60x = 38,464.60 × 8,991.60
  4. Step 4: Simplify right side
    25,631.60x = 345,858,297.36
  5. Step 5: Solve for x
    x = 345,858,297.36/25,631.60
  6. Step 6: Final answer
    x = 13,493.43

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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.