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Finding the Fourth Proportional to 11,388.60, 17,054.10 and 9,084.60

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Solution

The fourth proportional to 11,388.60, 17,054.10 and 9,084.60 is: 13,603.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,388.60 : 17,054.10 = 9,084.60 : x
  2. Step 2: Convert to fraction form
    11,388.60/17,054.10 = 9,084.60/x
  3. Step 3: Cross multiply
    11,388.60x = 17,054.10 × 9,084.60
  4. Step 4: Simplify right side
    11,388.60x = 154,929,676.86
  5. Step 5: Solve for x
    x = 154,929,676.86/11,388.60
  6. Step 6: Final answer
    x = 13,603.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.