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Finding the Fourth Proportional to 9,508.80, 13,286.40 and 9,508.80

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Solution

The fourth proportional to 9,508.80, 13,286.40 and 9,508.80 is: 13,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,508.80 : 13,286.40 = 9,508.80 : x
  2. Step 2: Convert to fraction form
    9,508.80/13,286.40 = 9,508.80/x
  3. Step 3: Cross multiply
    9,508.80x = 13,286.40 × 9,508.80
  4. Step 4: Simplify right side
    9,508.80x = 126,337,720.32
  5. Step 5: Solve for x
    x = 126,337,720.32/9,508.80
  6. Step 6: Final answer
    x = 13,286.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.