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Finding the Fourth Proportional to 18,241.89, 25,173.79 and 9,858.39

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Solution

The fourth proportional to 18,241.89, 25,173.79 and 9,858.39 is: 13,604.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,241.89 : 25,173.79 = 9,858.39 : x
  2. Step 2: Convert to fraction form
    18,241.89/25,173.79 = 9,858.39/x
  3. Step 3: Cross multiply
    18,241.89x = 25,173.79 × 9,858.39
  4. Step 4: Simplify right side
    18,241.89x = 248,173,039.60
  5. Step 5: Solve for x
    x = 248,173,039.60/18,241.89
  6. Step 6: Final answer
    x = 13,604.57

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.