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Finding the Fourth Proportional to 18,478.72, 27,717.68 and 5,998.72

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Solution

The fourth proportional to 18,478.72, 27,717.68 and 5,998.72 is: 8,997.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,478.72 : 27,717.68 = 5,998.72 : x
  2. Step 2: Convert to fraction form
    18,478.72/27,717.68 = 5,998.72/x
  3. Step 3: Cross multiply
    18,478.72x = 27,717.68 × 5,998.72
  4. Step 4: Simplify right side
    18,478.72x = 166,270,714.23
  5. Step 5: Solve for x
    x = 166,270,714.23/18,478.72
  6. Step 6: Final answer
    x = 8,997.96

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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.