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Finding the Fourth Proportional to 11,405.21, 17,071.97 and 7,249.91

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Solution

The fourth proportional to 11,405.21, 17,071.97 and 7,249.91 is: 10,852.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.21 : 17,071.97 = 7,249.91 : x
  2. Step 2: Convert to fraction form
    11,405.21/17,071.97 = 7,249.91/x
  3. Step 3: Cross multiply
    11,405.21x = 17,071.97 × 7,249.91
  4. Step 4: Simplify right side
    11,405.21x = 123,770,124.41
  5. Step 5: Solve for x
    x = 123,770,124.41/11,405.21
  6. Step 6: Final answer
    x = 10,852.07

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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.