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Finding the Fourth Proportional to 13,483.44, 18,608.13 and 7,819.65

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Solution

The fourth proportional to 13,483.44, 18,608.13 and 7,819.65 is: 10,791.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,483.44 : 18,608.13 = 7,819.65 : x
  2. Step 2: Convert to fraction form
    13,483.44/18,608.13 = 7,819.65/x
  3. Step 3: Cross multiply
    13,483.44x = 18,608.13 × 7,819.65
  4. Step 4: Simplify right side
    13,483.44x = 145,509,063.75
  5. Step 5: Solve for x
    x = 145,509,063.75/13,483.44
  6. Step 6: Final answer
    x = 10,791.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.