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Finding the Fourth Proportional to 11,379.81, 17,057.99 and 4,357.91

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Solution

The fourth proportional to 11,379.81, 17,057.99 and 4,357.91 is: 6,532.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,379.81 : 17,057.99 = 4,357.91 : x
  2. Step 2: Convert to fraction form
    11,379.81/17,057.99 = 4,357.91/x
  3. Step 3: Cross multiply
    11,379.81x = 17,057.99 × 4,357.91
  4. Step 4: Simplify right side
    11,379.81x = 74,337,185.20
  5. Step 5: Solve for x
    x = 74,337,185.20/11,379.81
  6. Step 6: Final answer
    x = 6,532.37

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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.