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Finding the Fourth Proportional to 28,114.65, 38,791.82 and 16,787.82

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Solution

The fourth proportional to 28,114.65, 38,791.82 and 16,787.82 is: 23,163.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.65 : 38,791.82 = 16,787.82 : x
  2. Step 2: Convert to fraction form
    28,114.65/38,791.82 = 16,787.82/x
  3. Step 3: Cross multiply
    28,114.65x = 38,791.82 × 16,787.82
  4. Step 4: Simplify right side
    28,114.65x = 651,230,007.69
  5. Step 5: Solve for x
    x = 651,230,007.69/28,114.65
  6. Step 6: Final answer
    x = 23,163.37

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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.