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Finding the Fourth Proportional to 18,291.68, 27,408.90 and 14,141.92

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Solution

The fourth proportional to 18,291.68, 27,408.90 and 14,141.92 is: 21,190.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.68 : 27,408.90 = 14,141.92 : x
  2. Step 2: Convert to fraction form
    18,291.68/27,408.90 = 14,141.92/x
  3. Step 3: Cross multiply
    18,291.68x = 27,408.90 × 14,141.92
  4. Step 4: Simplify right side
    18,291.68x = 387,614,334.04
  5. Step 5: Solve for x
    x = 387,614,334.04/18,291.68
  6. Step 6: Final answer
    x = 21,190.75

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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.