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Finding the Fourth Proportional to 19,904.64, 29,838.48 and 8,805.42

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Solution

The fourth proportional to 19,904.64, 29,838.48 and 8,805.42 is: 13,199.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,904.64 : 29,838.48 = 8,805.42 : x
  2. Step 2: Convert to fraction form
    19,904.64/29,838.48 = 8,805.42/x
  3. Step 3: Cross multiply
    19,904.64x = 29,838.48 × 8,805.42
  4. Step 4: Simplify right side
    19,904.64x = 262,740,348.56
  5. Step 5: Solve for x
    x = 262,740,348.56/19,904.64
  6. Step 6: Final answer
    x = 13,199.95

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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.