Home / 18,020.36-27,028.60-8,530.40

Finding the Fourth Proportional to 18,020.36, 27,028.60 and 8,530.40

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Solution

The fourth proportional to 18,020.36, 27,028.60 and 8,530.40 is: 12,794.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,020.36 : 27,028.60 = 8,530.40 : x
  2. Step 2: Convert to fraction form
    18,020.36/27,028.60 = 8,530.40/x
  3. Step 3: Cross multiply
    18,020.36x = 27,028.60 × 8,530.40
  4. Step 4: Simplify right side
    18,020.36x = 230,564,769.44
  5. Step 5: Solve for x
    x = 230,564,769.44/18,020.36
  6. Step 6: Final answer
    x = 12,794.68

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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.