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Finding the Fourth Proportional to 12,103.99, 18,149.00 and 4,699.79

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Solution

The fourth proportional to 12,103.99, 18,149.00 and 4,699.79 is: 7,046.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,103.99 : 18,149.00 = 4,699.79 : x
  2. Step 2: Convert to fraction form
    12,103.99/18,149.00 = 4,699.79/x
  3. Step 3: Cross multiply
    12,103.99x = 18,149.00 × 4,699.79
  4. Step 4: Simplify right side
    12,103.99x = 85,296,544.61
  5. Step 5: Solve for x
    x = 85,296,544.61/12,103.99
  6. Step 6: Final answer
    x = 7,046.98

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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.