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Finding the Fourth Proportional to 12,603.16, 18,903.30 and 3,369.88

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Solution

The fourth proportional to 12,603.16, 18,903.30 and 3,369.88 is: 5,054.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.16 : 18,903.30 = 3,369.88 : x
  2. Step 2: Convert to fraction form
    12,603.16/18,903.30 = 3,369.88/x
  3. Step 3: Cross multiply
    12,603.16x = 18,903.30 × 3,369.88
  4. Step 4: Simplify right side
    12,603.16x = 63,701,788.50
  5. Step 5: Solve for x
    x = 63,701,788.50/12,603.16
  6. Step 6: Final answer
    x = 5,054.43

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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.