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Finding the Fourth Proportional to 18,272.08, 27,408 and 14,118.08

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Solution

The fourth proportional to 18,272.08, 27,408 and 14,118.08 is: 21,177.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,272.08 : 27,408 = 14,118.08 : x
  2. Step 2: Convert to fraction form
    18,272.08/27,408 = 14,118.08/x
  3. Step 3: Cross multiply
    18,272.08x = 27,408 × 14,118.08
  4. Step 4: Simplify right side
    18,272.08x = 386,948,336.64
  5. Step 5: Solve for x
    x = 386,948,336.64/18,272.08
  6. Step 6: Final answer
    x = 21,177.03

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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.