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Finding the Fourth Proportional to 21,049.65, 31,546.50 and 11,167.65

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Solution

The fourth proportional to 21,049.65, 31,546.50 and 11,167.65 is: 16,736.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.65 : 31,546.50 = 11,167.65 : x
  2. Step 2: Convert to fraction form
    21,049.65/31,546.50 = 11,167.65/x
  3. Step 3: Cross multiply
    21,049.65x = 31,546.50 × 11,167.65
  4. Step 4: Simplify right side
    21,049.65x = 352,300,270.73
  5. Step 5: Solve for x
    x = 352,300,270.73/21,049.65
  6. Step 6: Final answer
    x = 16,736.63

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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.