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Finding the Fourth Proportional to 27,855.99, 41,779.51 and 8,129.93

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Solution

The fourth proportional to 27,855.99, 41,779.51 and 8,129.93 is: 12,193.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,855.99 : 41,779.51 = 8,129.93 : x
  2. Step 2: Convert to fraction form
    27,855.99/41,779.51 = 8,129.93/x
  3. Step 3: Cross multiply
    27,855.99x = 41,779.51 × 8,129.93
  4. Step 4: Simplify right side
    27,855.99x = 339,664,262.51
  5. Step 5: Solve for x
    x = 339,664,262.51/27,855.99
  6. Step 6: Final answer
    x = 12,193.58

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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.