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Finding the Fourth Proportional to 19,636.10, 29,455.08 and 6,488.18

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Solution

The fourth proportional to 19,636.10, 29,455.08 and 6,488.18 is: 9,732.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,636.10 : 29,455.08 = 6,488.18 : x
  2. Step 2: Convert to fraction form
    19,636.10/29,455.08 = 6,488.18/x
  3. Step 3: Cross multiply
    19,636.10x = 29,455.08 × 6,488.18
  4. Step 4: Simplify right side
    19,636.10x = 191,109,860.95
  5. Step 5: Solve for x
    x = 191,109,860.95/19,636.10
  6. Step 6: Final answer
    x = 9,732.58

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.