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Finding the Fourth Proportional to 13,217, 18,239.46 and 7,329

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Solution

The fourth proportional to 13,217, 18,239.46 and 7,329 is: 10,114.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217 : 18,239.46 = 7,329 : x
  2. Step 2: Convert to fraction form
    13,217/18,239.46 = 7,329/x
  3. Step 3: Cross multiply
    13,217x = 18,239.46 × 7,329
  4. Step 4: Simplify right side
    13,217x = 133,677,002.34
  5. Step 5: Solve for x
    x = 133,677,002.34/13,217
  6. Step 6: Final answer
    x = 10,114.02

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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.