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Finding the Fourth Proportional to 17,912.34, 26,866.34 and 4,765.70

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Solution

The fourth proportional to 17,912.34, 26,866.34 and 4,765.70 is: 7,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,912.34 : 26,866.34 = 4,765.70 : x
  2. Step 2: Convert to fraction form
    17,912.34/26,866.34 = 4,765.70/x
  3. Step 3: Cross multiply
    17,912.34x = 26,866.34 × 4,765.70
  4. Step 4: Simplify right side
    17,912.34x = 128,036,916.54
  5. Step 5: Solve for x
    x = 128,036,916.54/17,912.34
  6. Step 6: Final answer
    x = 7,147.97

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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.