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Finding the Fourth Proportional to 11,775.99, 17,659.41 and 4,378.79

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Solution

The fourth proportional to 11,775.99, 17,659.41 and 4,378.79 is: 6,566.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,775.99 : 17,659.41 = 4,378.79 : x
  2. Step 2: Convert to fraction form
    11,775.99/17,659.41 = 4,378.79/x
  3. Step 3: Cross multiply
    11,775.99x = 17,659.41 × 4,378.79
  4. Step 4: Simplify right side
    11,775.99x = 77,326,759.62
  5. Step 5: Solve for x
    x = 77,326,759.62/11,775.99
  6. Step 6: Final answer
    x = 6,566.48

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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.