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Finding the Fourth Proportional to 18,390.93, 25,371.03 and 10,833.63

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Solution

The fourth proportional to 18,390.93, 25,371.03 and 10,833.63 is: 14,945.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.93 : 25,371.03 = 10,833.63 : x
  2. Step 2: Convert to fraction form
    18,390.93/25,371.03 = 10,833.63/x
  3. Step 3: Cross multiply
    18,390.93x = 25,371.03 × 10,833.63
  4. Step 4: Simplify right side
    18,390.93x = 274,860,351.74
  5. Step 5: Solve for x
    x = 274,860,351.74/18,390.93
  6. Step 6: Final answer
    x = 14,945.43

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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.