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Finding the Fourth Proportional to 20,498.79, 30,755.93 and 8,027.72

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Solution

The fourth proportional to 20,498.79, 30,755.93 and 8,027.72 is: 12,044.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.79 : 30,755.93 = 8,027.72 : x
  2. Step 2: Convert to fraction form
    20,498.79/30,755.93 = 8,027.72/x
  3. Step 3: Cross multiply
    20,498.79x = 30,755.93 × 8,027.72
  4. Step 4: Simplify right side
    20,498.79x = 246,899,994.38
  5. Step 5: Solve for x
    x = 246,899,994.38/20,498.79
  6. Step 6: Final answer
    x = 12,044.61

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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.