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Finding the Fourth Proportional to 20,018, 30,027 and 5,426

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Solution

The fourth proportional to 20,018, 30,027 and 5,426 is: 8,139

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018 : 30,027 = 5,426 : x
  2. Step 2: Convert to fraction form
    20,018/30,027 = 5,426/x
  3. Step 3: Cross multiply
    20,018x = 30,027 × 5,426
  4. Step 4: Simplify right side
    20,018x = 162,926,502
  5. Step 5: Solve for x
    x = 162,926,502/20,018
  6. Step 6: Final answer
    x = 8,139

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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.