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Finding the Fourth Proportional to 18,467.40, 27,701.10 and 17,155.20

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Solution

The fourth proportional to 18,467.40, 27,701.10 and 17,155.20 is: 25,732.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,467.40 : 27,701.10 = 17,155.20 : x
  2. Step 2: Convert to fraction form
    18,467.40/27,701.10 = 17,155.20/x
  3. Step 3: Cross multiply
    18,467.40x = 27,701.10 × 17,155.20
  4. Step 4: Simplify right side
    18,467.40x = 475,217,910.72
  5. Step 5: Solve for x
    x = 475,217,910.72/18,467.40
  6. Step 6: Final answer
    x = 25,732.80

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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.