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Finding the Fourth Proportional to 18,776.85, 25,902.03 and 11,610.78

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Solution

The fourth proportional to 18,776.85, 25,902.03 and 11,610.78 is: 16,016.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,776.85 : 25,902.03 = 11,610.78 : x
  2. Step 2: Convert to fraction form
    18,776.85/25,902.03 = 11,610.78/x
  3. Step 3: Cross multiply
    18,776.85x = 25,902.03 × 11,610.78
  4. Step 4: Simplify right side
    18,776.85x = 300,742,771.88
  5. Step 5: Solve for x
    x = 300,742,771.88/18,776.85
  6. Step 6: Final answer
    x = 16,016.68

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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.