Home / 18,072.12-27,122.79-9,309.54

Finding the Fourth Proportional to 18,072.12, 27,122.79 and 9,309.54

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Solution

The fourth proportional to 18,072.12, 27,122.79 and 9,309.54 is: 13,971.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,072.12 : 27,122.79 = 9,309.54 : x
  2. Step 2: Convert to fraction form
    18,072.12/27,122.79 = 9,309.54/x
  3. Step 3: Cross multiply
    18,072.12x = 27,122.79 × 9,309.54
  4. Step 4: Simplify right side
    18,072.12x = 252,500,698.42
  5. Step 5: Solve for x
    x = 252,500,698.42/18,072.12
  6. Step 6: Final answer
    x = 13,971.84

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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.