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Finding the Fourth Proportional to 18,827.03, 25,978.61 and 11,271.56

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Solution

The fourth proportional to 18,827.03, 25,978.61 and 11,271.56 is: 15,553.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,827.03 : 25,978.61 = 11,271.56 : x
  2. Step 2: Convert to fraction form
    18,827.03/25,978.61 = 11,271.56/x
  3. Step 3: Cross multiply
    18,827.03x = 25,978.61 × 11,271.56
  4. Step 4: Simplify right side
    18,827.03x = 292,819,331.44
  5. Step 5: Solve for x
    x = 292,819,331.44/18,827.03
  6. Step 6: Final answer
    x = 15,553.13

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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.