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Finding the Fourth Proportional to 18,894, 28,342.17 and 5,747.34

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Solution

The fourth proportional to 18,894, 28,342.17 and 5,747.34 is: 8,621.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,894 : 28,342.17 = 5,747.34 : x
  2. Step 2: Convert to fraction form
    18,894/28,342.17 = 5,747.34/x
  3. Step 3: Cross multiply
    18,894x = 28,342.17 × 5,747.34
  4. Step 4: Simplify right side
    18,894x = 162,892,087.33
  5. Step 5: Solve for x
    x = 162,892,087.33/18,894
  6. Step 6: Final answer
    x = 8,621.37

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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.