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Finding the Fourth Proportional to 12,668.54, 19,006.62 and 8,977.88

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Solution

The fourth proportional to 12,668.54, 19,006.62 and 8,977.88 is: 13,469.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.54 : 19,006.62 = 8,977.88 : x
  2. Step 2: Convert to fraction form
    12,668.54/19,006.62 = 8,977.88/x
  3. Step 3: Cross multiply
    12,668.54x = 19,006.62 × 8,977.88
  4. Step 4: Simplify right side
    12,668.54x = 170,639,153.57
  5. Step 5: Solve for x
    x = 170,639,153.57/12,668.54
  6. Step 6: Final answer
    x = 13,469.52

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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.