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Finding the Fourth Proportional to 13,356, 18,425.52 and 8,321.76

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Solution

The fourth proportional to 13,356, 18,425.52 and 8,321.76 is: 11,480.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356 : 18,425.52 = 8,321.76 : x
  2. Step 2: Convert to fraction form
    13,356/18,425.52 = 8,321.76/x
  3. Step 3: Cross multiply
    13,356x = 18,425.52 × 8,321.76
  4. Step 4: Simplify right side
    13,356x = 153,332,755.32
  5. Step 5: Solve for x
    x = 153,332,755.32/13,356
  6. Step 6: Final answer
    x = 11,480.44

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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.