Home / 13,212.71-18,234.69-7,245.54

Finding the Fourth Proportional to 13,212.71, 18,234.69 and 7,245.54

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Solution

The fourth proportional to 13,212.71, 18,234.69 and 7,245.54 is: 9,999.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.71 : 18,234.69 = 7,245.54 : x
  2. Step 2: Convert to fraction form
    13,212.71/18,234.69 = 7,245.54/x
  3. Step 3: Cross multiply
    13,212.71x = 18,234.69 × 7,245.54
  4. Step 4: Simplify right side
    13,212.71x = 132,120,175.78
  5. Step 5: Solve for x
    x = 132,120,175.78/13,212.71
  6. Step 6: Final answer
    x = 9,999.48

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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.