Home / 20,028.05-30,042.03-8,187.38

Finding the Fourth Proportional to 20,028.05, 30,042.03 and 8,187.38

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Solution

The fourth proportional to 20,028.05, 30,042.03 and 8,187.38 is: 12,281.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,028.05 : 30,042.03 = 8,187.38 : x
  2. Step 2: Convert to fraction form
    20,028.05/30,042.03 = 8,187.38/x
  3. Step 3: Cross multiply
    20,028.05x = 30,042.03 × 8,187.38
  4. Step 4: Simplify right side
    20,028.05x = 245,965,365.37
  5. Step 5: Solve for x
    x = 245,965,365.37/20,028.05
  6. Step 6: Final answer
    x = 12,281.05

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1.5x scale

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.