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Finding the Fourth Proportional to 15,469.65, 21,344.58 and 8,753.83

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Solution

The fourth proportional to 15,469.65, 21,344.58 and 8,753.83 is: 12,078.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,469.65 : 21,344.58 = 8,753.83 : x
  2. Step 2: Convert to fraction form
    15,469.65/21,344.58 = 8,753.83/x
  3. Step 3: Cross multiply
    15,469.65x = 21,344.58 × 8,753.83
  4. Step 4: Simplify right side
    15,469.65x = 186,846,771.38
  5. Step 5: Solve for x
    x = 186,846,771.38/15,469.65
  6. Step 6: Final answer
    x = 12,078.28

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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.