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Finding the Fourth Proportional to 18,425.33, 27,638 and 4,574.33

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Solution

The fourth proportional to 18,425.33, 27,638 and 4,574.33 is: 6,861.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.33 : 27,638 = 4,574.33 : x
  2. Step 2: Convert to fraction form
    18,425.33/27,638 = 4,574.33/x
  3. Step 3: Cross multiply
    18,425.33x = 27,638 × 4,574.33
  4. Step 4: Simplify right side
    18,425.33x = 126,425,401.64
  5. Step 5: Solve for x
    x = 126,425,401.64/18,425.33
  6. Step 6: Final answer
    x = 6,861.50

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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.