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Finding the Fourth Proportional to 16,960.79, 23,400.60 and 9,789.79

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Solution

The fourth proportional to 16,960.79, 23,400.60 and 9,789.79 is: 13,506.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,960.79 : 23,400.60 = 9,789.79 : x
  2. Step 2: Convert to fraction form
    16,960.79/23,400.60 = 9,789.79/x
  3. Step 3: Cross multiply
    16,960.79x = 23,400.60 × 9,789.79
  4. Step 4: Simplify right side
    16,960.79x = 229,086,842.72
  5. Step 5: Solve for x
    x = 229,086,842.72/16,960.79
  6. Step 6: Final answer
    x = 13,506.85

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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.