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Finding the Fourth Proportional to 11,879.96, 17,808.20 and 5,628.98

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Solution

The fourth proportional to 11,879.96, 17,808.20 and 5,628.98 is: 8,437.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.96 : 17,808.20 = 5,628.98 : x
  2. Step 2: Convert to fraction form
    11,879.96/17,808.20 = 5,628.98/x
  3. Step 3: Cross multiply
    11,879.96x = 17,808.20 × 5,628.98
  4. Step 4: Simplify right side
    11,879.96x = 100,242,001.64
  5. Step 5: Solve for x
    x = 100,242,001.64/11,879.96
  6. Step 6: Final answer
    x = 8,437.91

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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.