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Finding the Fourth Proportional to 19,211.10, 28,787.49 and 9,347.73

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Solution

The fourth proportional to 19,211.10, 28,787.49 and 9,347.73 is: 14,007.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.10 : 28,787.49 = 9,347.73 : x
  2. Step 2: Convert to fraction form
    19,211.10/28,787.49 = 9,347.73/x
  3. Step 3: Cross multiply
    19,211.10x = 28,787.49 × 9,347.73
  4. Step 4: Simplify right side
    19,211.10x = 269,097,683.90
  5. Step 5: Solve for x
    x = 269,097,683.90/19,211.10
  6. Step 6: Final answer
    x = 14,007.41

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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.