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Finding the Fourth Proportional to 18,241.90, 25,173.85 and 9,858.40

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Solution

The fourth proportional to 18,241.90, 25,173.85 and 9,858.40 is: 13,604.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,241.90 : 25,173.85 = 9,858.40 : x
  2. Step 2: Convert to fraction form
    18,241.90/25,173.85 = 9,858.40/x
  3. Step 3: Cross multiply
    18,241.90x = 25,173.85 × 9,858.40
  4. Step 4: Simplify right side
    18,241.90x = 248,173,882.84
  5. Step 5: Solve for x
    x = 248,173,882.84/18,241.90
  6. Step 6: Final answer
    x = 13,604.61

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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.