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Finding the Fourth Proportional to 12,502.73, 18,755.64 and 4,188.72

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Solution

The fourth proportional to 12,502.73, 18,755.64 and 4,188.72 is: 6,283.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,502.73 : 18,755.64 = 4,188.72 : x
  2. Step 2: Convert to fraction form
    12,502.73/18,755.64 = 4,188.72/x
  3. Step 3: Cross multiply
    12,502.73x = 18,755.64 × 4,188.72
  4. Step 4: Simplify right side
    12,502.73x = 78,562,124.38
  5. Step 5: Solve for x
    x = 78,562,124.38/12,502.73
  6. Step 6: Final answer
    x = 6,283.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.