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Finding the Fourth Proportional to 15,523.97, 21,423.08 and 8,450.44

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Solution

The fourth proportional to 15,523.97, 21,423.08 and 8,450.44 is: 11,661.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.97 : 21,423.08 = 8,450.44 : x
  2. Step 2: Convert to fraction form
    15,523.97/21,423.08 = 8,450.44/x
  3. Step 3: Cross multiply
    15,523.97x = 21,423.08 × 8,450.44
  4. Step 4: Simplify right side
    15,523.97x = 181,034,452.16
  5. Step 5: Solve for x
    x = 181,034,452.16/15,523.97
  6. Step 6: Final answer
    x = 11,661.61

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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.