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Finding the Fourth Proportional to 13,326.74, 18,390.94 and 7,277.00

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Solution

The fourth proportional to 13,326.74, 18,390.94 and 7,277.00 is: 10,042.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,326.74 : 18,390.94 = 7,277.00 : x
  2. Step 2: Convert to fraction form
    13,326.74/18,390.94 = 7,277.00/x
  3. Step 3: Cross multiply
    13,326.74x = 18,390.94 × 7,277.00
  4. Step 4: Simplify right side
    13,326.74x = 133,830,778.43
  5. Step 5: Solve for x
    x = 133,830,778.43/13,326.74
  6. Step 6: Final answer
    x = 10,042.27

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