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Finding the Fourth Proportional to 18,661.52, 27,993.48 and 5,514.32

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Solution

The fourth proportional to 18,661.52, 27,993.48 and 5,514.32 is: 8,271.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,661.52 : 27,993.48 = 5,514.32 : x
  2. Step 2: Convert to fraction form
    18,661.52/27,993.48 = 5,514.32/x
  3. Step 3: Cross multiply
    18,661.52x = 27,993.48 × 5,514.32
  4. Step 4: Simplify right side
    18,661.52x = 154,365,006.63
  5. Step 5: Solve for x
    x = 154,365,006.63/18,661.52
  6. Step 6: Final answer
    x = 8,271.83

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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.