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Finding the Fourth Proportional to 18,603.64, 25,673.20 and 10,220.12

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Solution

The fourth proportional to 18,603.64, 25,673.20 and 10,220.12 is: 14,103.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.64 : 25,673.20 = 10,220.12 : x
  2. Step 2: Convert to fraction form
    18,603.64/25,673.20 = 10,220.12/x
  3. Step 3: Cross multiply
    18,603.64x = 25,673.20 × 10,220.12
  4. Step 4: Simplify right side
    18,603.64x = 262,383,184.78
  5. Step 5: Solve for x
    x = 262,383,184.78/18,603.64
  6. Step 6: Final answer
    x = 14,103.86

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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.