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Finding the Fourth Proportional to 18,264.12, 27,408.24 and 8,403

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Solution

The fourth proportional to 18,264.12, 27,408.24 and 8,403 is: 12,610.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,264.12 : 27,408.24 = 8,403 : x
  2. Step 2: Convert to fraction form
    18,264.12/27,408.24 = 8,403/x
  3. Step 3: Cross multiply
    18,264.12x = 27,408.24 × 8,403
  4. Step 4: Simplify right side
    18,264.12x = 230,311,440.72
  5. Step 5: Solve for x
    x = 230,311,440.72/18,264.12
  6. Step 6: Final answer
    x = 12,610.05

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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.