Home / 18,771.20-25,901.37-10,811.87

Finding the Fourth Proportional to 18,771.20, 25,901.37 and 10,811.87

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Solution

The fourth proportional to 18,771.20, 25,901.37 and 10,811.87 is: 14,918.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.20 : 25,901.37 = 10,811.87 : x
  2. Step 2: Convert to fraction form
    18,771.20/25,901.37 = 10,811.87/x
  3. Step 3: Cross multiply
    18,771.20x = 25,901.37 × 10,811.87
  4. Step 4: Simplify right side
    18,771.20x = 280,042,115.76
  5. Step 5: Solve for x
    x = 280,042,115.76/18,771.20
  6. Step 6: Final answer
    x = 14,918.72

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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.