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Finding the Fourth Proportional to 18,573, 25,632.36 and 11,121

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Solution

The fourth proportional to 18,573, 25,632.36 and 11,121 is: 15,347.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,573 : 25,632.36 = 11,121 : x
  2. Step 2: Convert to fraction form
    18,573/25,632.36 = 11,121/x
  3. Step 3: Cross multiply
    18,573x = 25,632.36 × 11,121
  4. Step 4: Simplify right side
    18,573x = 285,057,475.56
  5. Step 5: Solve for x
    x = 285,057,475.56/18,573
  6. Step 6: Final answer
    x = 15,347.95

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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.