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Finding the Fourth Proportional to 18,808.85, 25,958.81 and 10,850.90

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Solution

The fourth proportional to 18,808.85, 25,958.81 and 10,850.90 is: 14,975.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.85 : 25,958.81 = 10,850.90 : x
  2. Step 2: Convert to fraction form
    18,808.85/25,958.81 = 10,850.90/x
  3. Step 3: Cross multiply
    18,808.85x = 25,958.81 × 10,850.90
  4. Step 4: Simplify right side
    18,808.85x = 281,676,267.38
  5. Step 5: Solve for x
    x = 281,676,267.38/18,808.85
  6. Step 6: Final answer
    x = 14,975.73

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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.