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Finding the Fourth Proportional to 13,693.74, 18,897.48 and 8,028.60

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Solution

The fourth proportional to 13,693.74, 18,897.48 and 8,028.60 is: 11,079.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,693.74 : 18,897.48 = 8,028.60 : x
  2. Step 2: Convert to fraction form
    13,693.74/18,897.48 = 8,028.60/x
  3. Step 3: Cross multiply
    13,693.74x = 18,897.48 × 8,028.60
  4. Step 4: Simplify right side
    13,693.74x = 151,720,307.93
  5. Step 5: Solve for x
    x = 151,720,307.93/13,693.74
  6. Step 6: Final answer
    x = 11,079.54

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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.