Home / 18,786.60-28,141.56-8,895.83

Finding the Fourth Proportional to 18,786.60, 28,141.56 and 8,895.83

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Solution

The fourth proportional to 18,786.60, 28,141.56 and 8,895.83 is: 13,325.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.60 : 28,141.56 = 8,895.83 : x
  2. Step 2: Convert to fraction form
    18,786.60/28,141.56 = 8,895.83/x
  3. Step 3: Cross multiply
    18,786.60x = 28,141.56 × 8,895.83
  4. Step 4: Simplify right side
    18,786.60x = 250,342,392.99
  5. Step 5: Solve for x
    x = 250,342,392.99/18,786.60
  6. Step 6: Final answer
    x = 13,325.58

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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.