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Finding the Fourth Proportional to 12,486.99, 17,230.59 and 7,183.51

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Solution

The fourth proportional to 12,486.99, 17,230.59 and 7,183.51 is: 9,912.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.99 : 17,230.59 = 7,183.51 : x
  2. Step 2: Convert to fraction form
    12,486.99/17,230.59 = 7,183.51/x
  3. Step 3: Cross multiply
    12,486.99x = 17,230.59 × 7,183.51
  4. Step 4: Simplify right side
    12,486.99x = 123,776,115.57
  5. Step 5: Solve for x
    x = 123,776,115.57/12,486.99
  6. Step 6: Final answer
    x = 9,912.41

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Double scale
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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.