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Finding the Fourth Proportional to 18,668.82, 25,727.54 and 13,354.42

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Solution

The fourth proportional to 18,668.82, 25,727.54 and 13,354.42 is: 18,403.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.82 : 25,727.54 = 13,354.42 : x
  2. Step 2: Convert to fraction form
    18,668.82/25,727.54 = 13,354.42/x
  3. Step 3: Cross multiply
    18,668.82x = 25,727.54 × 13,354.42
  4. Step 4: Simplify right side
    18,668.82x = 343,576,374.73
  5. Step 5: Solve for x
    x = 343,576,374.73/18,668.82
  6. Step 6: Final answer
    x = 18,403.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.