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Finding the Fourth Proportional to 19,748.58, 29,628.90 and 11,859.90

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Solution

The fourth proportional to 19,748.58, 29,628.90 and 11,859.90 is: 17,793.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,748.58 : 29,628.90 = 11,859.90 : x
  2. Step 2: Convert to fraction form
    19,748.58/29,628.90 = 11,859.90/x
  3. Step 3: Cross multiply
    19,748.58x = 29,628.90 × 11,859.90
  4. Step 4: Simplify right side
    19,748.58x = 351,395,791.11
  5. Step 5: Solve for x
    x = 351,395,791.11/19,748.58
  6. Step 6: Final answer
    x = 17,793.47

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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.