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Finding the Fourth Proportional to 9,660.67, 13,330.92 and 8,955.43

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Solution

The fourth proportional to 9,660.67, 13,330.92 and 8,955.43 is: 12,357.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,660.67 : 13,330.92 = 8,955.43 : x
  2. Step 2: Convert to fraction form
    9,660.67/13,330.92 = 8,955.43/x
  3. Step 3: Cross multiply
    9,660.67x = 13,330.92 × 8,955.43
  4. Step 4: Simplify right side
    9,660.67x = 119,384,120.90
  5. Step 5: Solve for x
    x = 119,384,120.90/9,660.67
  6. Step 6: Final answer
    x = 12,357.75

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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.