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Finding the Fourth Proportional to 14,509.73, 21,763.69 and 8,661.94

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Solution

The fourth proportional to 14,509.73, 21,763.69 and 8,661.94 is: 12,992.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,509.73 : 21,763.69 = 8,661.94 : x
  2. Step 2: Convert to fraction form
    14,509.73/21,763.69 = 8,661.94/x
  3. Step 3: Cross multiply
    14,509.73x = 21,763.69 × 8,661.94
  4. Step 4: Simplify right side
    14,509.73x = 188,515,700.89
  5. Step 5: Solve for x
    x = 188,515,700.89/14,509.73
  6. Step 6: Final answer
    x = 12,992.36

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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.