Home / 18,964.60-28,423.82-13,419.54

Finding the Fourth Proportional to 18,964.60, 28,423.82 and 13,419.54

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Solution

The fourth proportional to 18,964.60, 28,423.82 and 13,419.54 is: 20,112.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,964.60 : 28,423.82 = 13,419.54 : x
  2. Step 2: Convert to fraction form
    18,964.60/28,423.82 = 13,419.54/x
  3. Step 3: Cross multiply
    18,964.60x = 28,423.82 × 13,419.54
  4. Step 4: Simplify right side
    18,964.60x = 381,434,589.44
  5. Step 5: Solve for x
    x = 381,434,589.44/18,964.60
  6. Step 6: Final answer
    x = 20,112.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.