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Finding the Fourth Proportional to 18,379.29, 25,351.48 and 10,819.26

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Solution

The fourth proportional to 18,379.29, 25,351.48 and 10,819.26 is: 14,923.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.29 : 25,351.48 = 10,819.26 : x
  2. Step 2: Convert to fraction form
    18,379.29/25,351.48 = 10,819.26/x
  3. Step 3: Cross multiply
    18,379.29x = 25,351.48 × 10,819.26
  4. Step 4: Simplify right side
    18,379.29x = 274,284,253.50
  5. Step 5: Solve for x
    x = 274,284,253.50/18,379.29
  6. Step 6: Final answer
    x = 14,923.55

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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.