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Finding the Fourth Proportional to 12,603.60, 18,910.26 and 4,813.02

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Solution

The fourth proportional to 12,603.60, 18,910.26 and 4,813.02 is: 7,221.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.60 : 18,910.26 = 4,813.02 : x
  2. Step 2: Convert to fraction form
    12,603.60/18,910.26 = 4,813.02/x
  3. Step 3: Cross multiply
    12,603.60x = 18,910.26 × 4,813.02
  4. Step 4: Simplify right side
    12,603.60x = 91,015,459.59
  5. Step 5: Solve for x
    x = 91,015,459.59/12,603.60
  6. Step 6: Final answer
    x = 7,221.39

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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.