Home / 18,886.83-28,302.67-16,811

Finding the Fourth Proportional to 18,886.83, 28,302.67 and 16,811

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Solution

The fourth proportional to 18,886.83, 28,302.67 and 16,811 is: 25,191.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.83 : 28,302.67 = 16,811 : x
  2. Step 2: Convert to fraction form
    18,886.83/28,302.67 = 16,811/x
  3. Step 3: Cross multiply
    18,886.83x = 28,302.67 × 16,811
  4. Step 4: Simplify right side
    18,886.83x = 475,796,185.37
  5. Step 5: Solve for x
    x = 475,796,185.37/18,886.83
  6. Step 6: Final answer
    x = 25,191.96

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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.