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Finding the Fourth Proportional to 13,863.78, 19,132.07 and 7,576.29

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Solution

The fourth proportional to 13,863.78, 19,132.07 and 7,576.29 is: 10,455.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,863.78 : 19,132.07 = 7,576.29 : x
  2. Step 2: Convert to fraction form
    13,863.78/19,132.07 = 7,576.29/x
  3. Step 3: Cross multiply
    13,863.78x = 19,132.07 × 7,576.29
  4. Step 4: Simplify right side
    13,863.78x = 144,950,072.74
  5. Step 5: Solve for x
    x = 144,950,072.74/13,863.78
  6. Step 6: Final answer
    x = 10,455.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.