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Finding the Fourth Proportional to 19,868.88, 29,808.48 and 9,336.96

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Solution

The fourth proportional to 19,868.88, 29,808.48 and 9,336.96 is: 14,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.88 : 29,808.48 = 9,336.96 : x
  2. Step 2: Convert to fraction form
    19,868.88/29,808.48 = 9,336.96/x
  3. Step 3: Cross multiply
    19,868.88x = 29,808.48 × 9,336.96
  4. Step 4: Simplify right side
    19,868.88x = 278,320,585.42
  5. Step 5: Solve for x
    x = 278,320,585.42/19,868.88
  6. Step 6: Final answer
    x = 14,007.86

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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.