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Finding the Fourth Proportional to 18,723.52, 28,071.42 and 8,851.27

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Solution

The fourth proportional to 18,723.52, 28,071.42 and 8,851.27 is: 13,270.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723.52 : 28,071.42 = 8,851.27 : x
  2. Step 2: Convert to fraction form
    18,723.52/28,071.42 = 8,851.27/x
  3. Step 3: Cross multiply
    18,723.52x = 28,071.42 × 8,851.27
  4. Step 4: Simplify right side
    18,723.52x = 248,467,717.70
  5. Step 5: Solve for x
    x = 248,467,717.70/18,723.52
  6. Step 6: Final answer
    x = 13,270.35

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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.