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Finding the Fourth Proportional to 18,252.35, 27,378.16 and 11,138.68

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Solution

The fourth proportional to 18,252.35, 27,378.16 and 11,138.68 is: 16,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,252.35 : 27,378.16 = 11,138.68 : x
  2. Step 2: Convert to fraction form
    18,252.35/27,378.16 = 11,138.68/x
  3. Step 3: Cross multiply
    18,252.35x = 27,378.16 × 11,138.68
  4. Step 4: Simplify right side
    18,252.35x = 304,956,563.23
  5. Step 5: Solve for x
    x = 304,956,563.23/18,252.35
  6. Step 6: Final answer
    x = 16,707.80

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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.