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Finding the Fourth Proportional to 11,378.70, 17,069.90 and 3,585.69

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Solution

The fourth proportional to 11,378.70, 17,069.90 and 3,585.69 is: 5,379.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,378.70 : 17,069.90 = 3,585.69 : x
  2. Step 2: Convert to fraction form
    11,378.70/17,069.90 = 3,585.69/x
  3. Step 3: Cross multiply
    11,378.70x = 17,069.90 × 3,585.69
  4. Step 4: Simplify right side
    11,378.70x = 61,207,369.73
  5. Step 5: Solve for x
    x = 61,207,369.73/11,378.70
  6. Step 6: Final answer
    x = 5,379.12

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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.