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Finding the Fourth Proportional to 13,404.88, 20,100 and 5,607.84

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Solution

The fourth proportional to 13,404.88, 20,100 and 5,607.84 is: 8,408.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,404.88 : 20,100 = 5,607.84 : x
  2. Step 2: Convert to fraction form
    13,404.88/20,100 = 5,607.84/x
  3. Step 3: Cross multiply
    13,404.88x = 20,100 × 5,607.84
  4. Step 4: Simplify right side
    13,404.88x = 112,717,584
  5. Step 5: Solve for x
    x = 112,717,584/13,404.88
  6. Step 6: Final answer
    x = 8,408.70

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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.