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Finding the Fourth Proportional to 11,069.60, 15,286.39 and 7,097.60

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Solution

The fourth proportional to 11,069.60, 15,286.39 and 7,097.60 is: 9,801.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,069.60 : 15,286.39 = 7,097.60 : x
  2. Step 2: Convert to fraction form
    11,069.60/15,286.39 = 7,097.60/x
  3. Step 3: Cross multiply
    11,069.60x = 15,286.39 × 7,097.60
  4. Step 4: Simplify right side
    11,069.60x = 108,496,702.14
  5. Step 5: Solve for x
    x = 108,496,702.14/11,069.60
  6. Step 6: Final answer
    x = 9,801.33

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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.