Home / 20,147.16-30,072.87-18,662.73

Finding the Fourth Proportional to 20,147.16, 30,072.87 and 18,662.73

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Solution

The fourth proportional to 20,147.16, 30,072.87 and 18,662.73 is: 27,857.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.16 : 30,072.87 = 18,662.73 : x
  2. Step 2: Convert to fraction form
    20,147.16/30,072.87 = 18,662.73/x
  3. Step 3: Cross multiply
    20,147.16x = 30,072.87 × 18,662.73
  4. Step 4: Simplify right side
    20,147.16x = 561,241,853.14
  5. Step 5: Solve for x
    x = 561,241,853.14/20,147.16
  6. Step 6: Final answer
    x = 27,857.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.