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Finding the Fourth Proportional to 9,939.79, 13,717.62 and 6,576.79

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Solution

The fourth proportional to 9,939.79, 13,717.62 and 6,576.79 is: 9,076.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,939.79 : 13,717.62 = 6,576.79 : x
  2. Step 2: Convert to fraction form
    9,939.79/13,717.62 = 6,576.79/x
  3. Step 3: Cross multiply
    9,939.79x = 13,717.62 × 6,576.79
  4. Step 4: Simplify right side
    9,939.79x = 90,217,906.04
  5. Step 5: Solve for x
    x = 90,217,906.04/9,939.79
  6. Step 6: Final answer
    x = 9,076.44

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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.