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Finding the Fourth Proportional to 18,404.40, 27,606.72 and 12,546.48

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Solution

The fourth proportional to 18,404.40, 27,606.72 and 12,546.48 is: 18,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.40 : 27,606.72 = 12,546.48 : x
  2. Step 2: Convert to fraction form
    18,404.40/27,606.72 = 12,546.48/x
  3. Step 3: Cross multiply
    18,404.40x = 27,606.72 × 12,546.48
  4. Step 4: Simplify right side
    18,404.40x = 346,367,160.35
  5. Step 5: Solve for x
    x = 346,367,160.35/18,404.40
  6. Step 6: Final answer
    x = 18,819.80

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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.