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Finding the Fourth Proportional to 12,469.83, 17,231.18 and 11,862.39

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Solution

The fourth proportional to 12,469.83, 17,231.18 and 11,862.39 is: 16,391.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,469.83 : 17,231.18 = 11,862.39 : x
  2. Step 2: Convert to fraction form
    12,469.83/17,231.18 = 11,862.39/x
  3. Step 3: Cross multiply
    12,469.83x = 17,231.18 × 11,862.39
  4. Step 4: Simplify right side
    12,469.83x = 204,402,918.01
  5. Step 5: Solve for x
    x = 204,402,918.01/12,469.83
  6. Step 6: Final answer
    x = 16,391.80

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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.