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Finding the Fourth Proportional to 21,195.86, 29,250.64 and 11,636.64

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Solution

The fourth proportional to 21,195.86, 29,250.64 and 11,636.64 is: 16,058.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195.86 : 29,250.64 = 11,636.64 : x
  2. Step 2: Convert to fraction form
    21,195.86/29,250.64 = 11,636.64/x
  3. Step 3: Cross multiply
    21,195.86x = 29,250.64 × 11,636.64
  4. Step 4: Simplify right side
    21,195.86x = 340,379,167.45
  5. Step 5: Solve for x
    x = 340,379,167.45/21,195.86
  6. Step 6: Final answer
    x = 16,058.76

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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.