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Finding the Fourth Proportional to 18,103.38, 27,160.74 and 5,453.64

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Solution

The fourth proportional to 18,103.38, 27,160.74 and 5,453.64 is: 8,182.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,103.38 : 27,160.74 = 5,453.64 : x
  2. Step 2: Convert to fraction form
    18,103.38/27,160.74 = 5,453.64/x
  3. Step 3: Cross multiply
    18,103.38x = 27,160.74 × 5,453.64
  4. Step 4: Simplify right side
    18,103.38x = 148,124,898.09
  5. Step 5: Solve for x
    x = 148,124,898.09/18,103.38
  6. Step 6: Final answer
    x = 8,182.17

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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.