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Finding the Fourth Proportional to 12,018.20, 18,011.10 and 8,058.20

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Solution

The fourth proportional to 12,018.20, 18,011.10 and 8,058.20 is: 12,076.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.20 : 18,011.10 = 8,058.20 : x
  2. Step 2: Convert to fraction form
    12,018.20/18,011.10 = 8,058.20/x
  3. Step 3: Cross multiply
    12,018.20x = 18,011.10 × 8,058.20
  4. Step 4: Simplify right side
    12,018.20x = 145,137,046.02
  5. Step 5: Solve for x
    x = 145,137,046.02/12,018.20
  6. Step 6: Final answer
    x = 12,076.44

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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.