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Finding the Fourth Proportional to 18,508.71, 27,772.16 and 8,648.68

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Solution

The fourth proportional to 18,508.71, 27,772.16 and 8,648.68 is: 12,977.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,508.71 : 27,772.16 = 8,648.68 : x
  2. Step 2: Convert to fraction form
    18,508.71/27,772.16 = 8,648.68/x
  3. Step 3: Cross multiply
    18,508.71x = 27,772.16 × 8,648.68
  4. Step 4: Simplify right side
    18,508.71x = 240,192,524.75
  5. Step 5: Solve for x
    x = 240,192,524.75/18,508.71
  6. Step 6: Final answer
    x = 12,977.27

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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.