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Finding the Fourth Proportional to 11,486.88, 17,230.12 and 6,289.92

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Solution

The fourth proportional to 11,486.88, 17,230.12 and 6,289.92 is: 9,434.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,486.88 : 17,230.12 = 6,289.92 : x
  2. Step 2: Convert to fraction form
    11,486.88/17,230.12 = 6,289.92/x
  3. Step 3: Cross multiply
    11,486.88x = 17,230.12 × 6,289.92
  4. Step 4: Simplify right side
    11,486.88x = 108,376,076.39
  5. Step 5: Solve for x
    x = 108,376,076.39/11,486.88
  6. Step 6: Final answer
    x = 9,434.77

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1.5x scale

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.