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Finding the Fourth Proportional to 18,339.76, 27,509.48 and 7,949.04

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Solution

The fourth proportional to 18,339.76, 27,509.48 and 7,949.04 is: 11,923.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.76 : 27,509.48 = 7,949.04 : x
  2. Step 2: Convert to fraction form
    18,339.76/27,509.48 = 7,949.04/x
  3. Step 3: Cross multiply
    18,339.76x = 27,509.48 × 7,949.04
  4. Step 4: Simplify right side
    18,339.76x = 218,673,956.90
  5. Step 5: Solve for x
    x = 218,673,956.90/18,339.76
  6. Step 6: Final answer
    x = 11,923.49

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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.