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Finding the Fourth Proportional to 28,227, 38,954.52 and 15,651.72

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Solution

The fourth proportional to 28,227, 38,954.52 and 15,651.72 is: 21,600.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,227 : 38,954.52 = 15,651.72 : x
  2. Step 2: Convert to fraction form
    28,227/38,954.52 = 15,651.72/x
  3. Step 3: Cross multiply
    28,227x = 38,954.52 × 15,651.72
  4. Step 4: Simplify right side
    28,227x = 609,705,239.77
  5. Step 5: Solve for x
    x = 609,705,239.77/28,227
  6. Step 6: Final answer
    x = 21,600.07

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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.