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Finding the Fourth Proportional to 19,576.56, 29,367 and 6,425.40

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Solution

The fourth proportional to 19,576.56, 29,367 and 6,425.40 is: 9,638.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,576.56 : 29,367 = 6,425.40 : x
  2. Step 2: Convert to fraction form
    19,576.56/29,367 = 6,425.40/x
  3. Step 3: Cross multiply
    19,576.56x = 29,367 × 6,425.40
  4. Step 4: Simplify right side
    19,576.56x = 188,694,721.80
  5. Step 5: Solve for x
    x = 188,694,721.80/19,576.56
  6. Step 6: Final answer
    x = 9,638.81

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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.