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Finding the Fourth Proportional to 18,603.46, 27,905.41 and 5,456.09

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Solution

The fourth proportional to 18,603.46, 27,905.41 and 5,456.09 is: 8,184.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.46 : 27,905.41 = 5,456.09 : x
  2. Step 2: Convert to fraction form
    18,603.46/27,905.41 = 5,456.09/x
  3. Step 3: Cross multiply
    18,603.46x = 27,905.41 × 5,456.09
  4. Step 4: Simplify right side
    18,603.46x = 152,254,484.57
  5. Step 5: Solve for x
    x = 152,254,484.57/18,603.46
  6. Step 6: Final answer
    x = 8,184.20

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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.