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Finding the Fourth Proportional to 11,668.80, 16,123.92 and 8,869.44

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Solution

The fourth proportional to 11,668.80, 16,123.92 and 8,869.44 is: 12,255.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,668.80 : 16,123.92 = 8,869.44 : x
  2. Step 2: Convert to fraction form
    11,668.80/16,123.92 = 8,869.44/x
  3. Step 3: Cross multiply
    11,668.80x = 16,123.92 × 8,869.44
  4. Step 4: Simplify right side
    11,668.80x = 143,010,141.00
  5. Step 5: Solve for x
    x = 143,010,141.00/11,668.80
  6. Step 6: Final answer
    x = 12,255.77

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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.