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Finding the Fourth Proportional to 18,603.54, 27,905.31 and 8,222.58

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Solution

The fourth proportional to 18,603.54, 27,905.31 and 8,222.58 is: 12,333.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.54 : 27,905.31 = 8,222.58 : x
  2. Step 2: Convert to fraction form
    18,603.54/27,905.31 = 8,222.58/x
  3. Step 3: Cross multiply
    18,603.54x = 27,905.31 × 8,222.58
  4. Step 4: Simplify right side
    18,603.54x = 229,453,643.90
  5. Step 5: Solve for x
    x = 229,453,643.90/18,603.54
  6. Step 6: Final answer
    x = 12,333.87

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1.5x scale

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.