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Finding the Fourth Proportional to 12,872.87, 19,223.63 and 12,733.71

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Solution

The fourth proportional to 12,872.87, 19,223.63 and 12,733.71 is: 19,015.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872.87 : 19,223.63 = 12,733.71 : x
  2. Step 2: Convert to fraction form
    12,872.87/19,223.63 = 12,733.71/x
  3. Step 3: Cross multiply
    12,872.87x = 19,223.63 × 12,733.71
  4. Step 4: Simplify right side
    12,872.87x = 244,788,129.57
  5. Step 5: Solve for x
    x = 244,788,129.57/12,872.87
  6. Step 6: Final answer
    x = 19,015.82

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.