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Finding the Fourth Proportional to 18,241.31, 25,173.01 and 9,857.81

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Solution

The fourth proportional to 18,241.31, 25,173.01 and 9,857.81 is: 13,603.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,241.31 : 25,173.01 = 9,857.81 : x
  2. Step 2: Convert to fraction form
    18,241.31/25,173.01 = 9,857.81/x
  3. Step 3: Cross multiply
    18,241.31x = 25,173.01 × 9,857.81
  4. Step 4: Simplify right side
    18,241.31x = 248,150,824.96
  5. Step 5: Solve for x
    x = 248,150,824.96/18,241.31
  6. Step 6: Final answer
    x = 13,603.78

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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.