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Finding the Fourth Proportional to 12,665.08, 17,481.99 and 7,950.88

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Solution

The fourth proportional to 12,665.08, 17,481.99 and 7,950.88 is: 10,974.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.08 : 17,481.99 = 7,950.88 : x
  2. Step 2: Convert to fraction form
    12,665.08/17,481.99 = 7,950.88/x
  3. Step 3: Cross multiply
    12,665.08x = 17,481.99 × 7,950.88
  4. Step 4: Simplify right side
    12,665.08x = 138,997,204.65
  5. Step 5: Solve for x
    x = 138,997,204.65/12,665.08
  6. Step 6: Final answer
    x = 10,974.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.