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Finding the Fourth Proportional to 11,221.65, 16,832.48 and 9,968.85

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Solution

The fourth proportional to 11,221.65, 16,832.48 and 9,968.85 is: 14,953.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.65 : 16,832.48 = 9,968.85 : x
  2. Step 2: Convert to fraction form
    11,221.65/16,832.48 = 9,968.85/x
  3. Step 3: Cross multiply
    11,221.65x = 16,832.48 × 9,968.85
  4. Step 4: Simplify right side
    11,221.65x = 167,800,418.40
  5. Step 5: Solve for x
    x = 167,800,418.40/11,221.65
  6. Step 6: Final answer
    x = 14,953.28

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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.