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Finding the Fourth Proportional to 19,651.65, 29,489.64 and 7,964.97

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Solution

The fourth proportional to 19,651.65, 29,489.64 and 7,964.97 is: 11,952.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,651.65 : 29,489.64 = 7,964.97 : x
  2. Step 2: Convert to fraction form
    19,651.65/29,489.64 = 7,964.97/x
  3. Step 3: Cross multiply
    19,651.65x = 29,489.64 × 7,964.97
  4. Step 4: Simplify right side
    19,651.65x = 234,884,097.91
  5. Step 5: Solve for x
    x = 234,884,097.91/19,651.65
  6. Step 6: Final answer
    x = 11,952.39

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1.5x scale

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.