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Finding the Fourth Proportional to 13,326, 18,391.50 and 7,737

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Solution

The fourth proportional to 13,326, 18,391.50 and 7,737 is: 10,678.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,326 : 18,391.50 = 7,737 : x
  2. Step 2: Convert to fraction form
    13,326/18,391.50 = 7,737/x
  3. Step 3: Cross multiply
    13,326x = 18,391.50 × 7,737
  4. Step 4: Simplify right side
    13,326x = 142,295,035.50
  5. Step 5: Solve for x
    x = 142,295,035.50/13,326
  6. Step 6: Final answer
    x = 10,678.00

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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.