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Finding the Fourth Proportional to 18,408.52, 27,578.76 and 14,253.22

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Solution

The fourth proportional to 18,408.52, 27,578.76 and 14,253.22 is: 21,353.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,408.52 : 27,578.76 = 14,253.22 : x
  2. Step 2: Convert to fraction form
    18,408.52/27,578.76 = 14,253.22/x
  3. Step 3: Cross multiply
    18,408.52x = 27,578.76 × 14,253.22
  4. Step 4: Simplify right side
    18,408.52x = 393,086,133.61
  5. Step 5: Solve for x
    x = 393,086,133.61/18,408.52
  6. Step 6: Final answer
    x = 21,353.49

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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.