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Finding the Fourth Proportional to 18,682.61, 27,992.75 and 13,409.71

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Solution

The fourth proportional to 18,682.61, 27,992.75 and 13,409.71 is: 20,092.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682.61 : 27,992.75 = 13,409.71 : x
  2. Step 2: Convert to fraction form
    18,682.61/27,992.75 = 13,409.71/x
  3. Step 3: Cross multiply
    18,682.61x = 27,992.75 × 13,409.71
  4. Step 4: Simplify right side
    18,682.61x = 375,374,522.57
  5. Step 5: Solve for x
    x = 375,374,522.57/18,682.61
  6. Step 6: Final answer
    x = 20,092.19

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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.