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Finding the Fourth Proportional to 12,485.67, 17,233.11 and 8,237.49

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Solution

The fourth proportional to 12,485.67, 17,233.11 and 8,237.49 is: 11,369.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.67 : 17,233.11 = 8,237.49 : x
  2. Step 2: Convert to fraction form
    12,485.67/17,233.11 = 8,237.49/x
  3. Step 3: Cross multiply
    12,485.67x = 17,233.11 × 8,237.49
  4. Step 4: Simplify right side
    12,485.67x = 141,957,571.29
  5. Step 5: Solve for x
    x = 141,957,571.29/12,485.67
  6. Step 6: Final answer
    x = 11,369.64

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Double scale
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Similar ratio
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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.