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Finding the Fourth Proportional to 18,048.32, 27,072.48 and 11,890.88

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Solution

The fourth proportional to 18,048.32, 27,072.48 and 11,890.88 is: 17,836.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,048.32 : 27,072.48 = 11,890.88 : x
  2. Step 2: Convert to fraction form
    18,048.32/27,072.48 = 11,890.88/x
  3. Step 3: Cross multiply
    18,048.32x = 27,072.48 × 11,890.88
  4. Step 4: Simplify right side
    18,048.32x = 321,915,610.98
  5. Step 5: Solve for x
    x = 321,915,610.98/18,048.32
  6. Step 6: Final answer
    x = 17,836.32

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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.