Home / 12,481.20-17,222.70-7,176.60

Finding the Fourth Proportional to 12,481.20, 17,222.70 and 7,176.60

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Solution

The fourth proportional to 12,481.20, 17,222.70 and 7,176.60 is: 9,902.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.20 : 17,222.70 = 7,176.60 : x
  2. Step 2: Convert to fraction form
    12,481.20/17,222.70 = 7,176.60/x
  3. Step 3: Cross multiply
    12,481.20x = 17,222.70 × 7,176.60
  4. Step 4: Simplify right side
    12,481.20x = 123,600,428.82
  5. Step 5: Solve for x
    x = 123,600,428.82/12,481.20
  6. Step 6: Final answer
    x = 9,902.93

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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.