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Finding the Fourth Proportional to 13,576.50, 20,369.07 and 4,342.50

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Solution

The fourth proportional to 13,576.50, 20,369.07 and 4,342.50 is: 6,515.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,576.50 : 20,369.07 = 4,342.50 : x
  2. Step 2: Convert to fraction form
    13,576.50/20,369.07 = 4,342.50/x
  3. Step 3: Cross multiply
    13,576.50x = 20,369.07 × 4,342.50
  4. Step 4: Simplify right side
    13,576.50x = 88,452,686.48
  5. Step 5: Solve for x
    x = 88,452,686.48/13,576.50
  6. Step 6: Final answer
    x = 6,515.13

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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.