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Finding the Fourth Proportional to 19,651.41, 29,474.89 and 18,495

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Solution

The fourth proportional to 19,651.41, 29,474.89 and 18,495 is: 27,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,651.41 : 29,474.89 = 18,495 : x
  2. Step 2: Convert to fraction form
    19,651.41/29,474.89 = 18,495/x
  3. Step 3: Cross multiply
    19,651.41x = 29,474.89 × 18,495
  4. Step 4: Simplify right side
    19,651.41x = 545,138,044.31
  5. Step 5: Solve for x
    x = 545,138,044.31/19,651.41
  6. Step 6: Final answer
    x = 27,740.40

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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.