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Finding the Fourth Proportional to 19,404.66, 29,089.65 and 8,305.64

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Solution

The fourth proportional to 19,404.66, 29,089.65 and 8,305.64 is: 12,451.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,404.66 : 29,089.65 = 8,305.64 : x
  2. Step 2: Convert to fraction form
    19,404.66/29,089.65 = 8,305.64/x
  3. Step 3: Cross multiply
    19,404.66x = 29,089.65 × 8,305.64
  4. Step 4: Simplify right side
    19,404.66x = 241,608,015.18
  5. Step 5: Solve for x
    x = 241,608,015.18/19,404.66
  6. Step 6: Final answer
    x = 12,451.03

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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.