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Finding the Fourth Proportional to 12,243.88, 18,365.68 and 3,009.88

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Solution

The fourth proportional to 12,243.88, 18,365.68 and 3,009.88 is: 4,514.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243.88 : 18,365.68 = 3,009.88 : x
  2. Step 2: Convert to fraction form
    12,243.88/18,365.68 = 3,009.88/x
  3. Step 3: Cross multiply
    12,243.88x = 18,365.68 × 3,009.88
  4. Step 4: Simplify right side
    12,243.88x = 55,278,492.92
  5. Step 5: Solve for x
    x = 55,278,492.92/12,243.88
  6. Step 6: Final answer
    x = 4,514.79

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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.