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Finding the Fourth Proportional to 18,402.28, 27,603.10 and 4,551.28

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Solution

The fourth proportional to 18,402.28, 27,603.10 and 4,551.28 is: 6,826.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,402.28 : 27,603.10 = 4,551.28 : x
  2. Step 2: Convert to fraction form
    18,402.28/27,603.10 = 4,551.28/x
  3. Step 3: Cross multiply
    18,402.28x = 27,603.10 × 4,551.28
  4. Step 4: Simplify right side
    18,402.28x = 125,629,436.97
  5. Step 5: Solve for x
    x = 125,629,436.97/18,402.28
  6. Step 6: Final answer
    x = 6,826.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.