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Finding the Fourth Proportional to 21,604.63, 29,814.39 and 11,668.63

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Solution

The fourth proportional to 21,604.63, 29,814.39 and 11,668.63 is: 16,102.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,604.63 : 29,814.39 = 11,668.63 : x
  2. Step 2: Convert to fraction form
    21,604.63/29,814.39 = 11,668.63/x
  3. Step 3: Cross multiply
    21,604.63x = 29,814.39 × 11,668.63
  4. Step 4: Simplify right side
    21,604.63x = 347,893,085.59
  5. Step 5: Solve for x
    x = 347,893,085.59/21,604.63
  6. Step 6: Final answer
    x = 16,102.71

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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.