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Finding the Fourth Proportional to 26,404.80, 36,408.48 and 21,096

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Solution

The fourth proportional to 26,404.80, 36,408.48 and 21,096 is: 29,088.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,404.80 : 36,408.48 = 21,096 : x
  2. Step 2: Convert to fraction form
    26,404.80/36,408.48 = 21,096/x
  3. Step 3: Cross multiply
    26,404.80x = 36,408.48 × 21,096
  4. Step 4: Simplify right side
    26,404.80x = 768,073,294.08
  5. Step 5: Solve for x
    x = 768,073,294.08/26,404.80
  6. Step 6: Final answer
    x = 29,088.40

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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.