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Finding the Fourth Proportional to 14,907, 20,571.70 and 8,283

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Solution

The fourth proportional to 14,907, 20,571.70 and 8,283 is: 11,430.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,907 : 20,571.70 = 8,283 : x
  2. Step 2: Convert to fraction form
    14,907/20,571.70 = 8,283/x
  3. Step 3: Cross multiply
    14,907x = 20,571.70 × 8,283
  4. Step 4: Simplify right side
    14,907x = 170,395,391.10
  5. Step 5: Solve for x
    x = 170,395,391.10/14,907
  6. Step 6: Final answer
    x = 11,430.56

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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.