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Finding the Fourth Proportional to 18,484.51, 27,716.63 and 9,103.90

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Solution

The fourth proportional to 18,484.51, 27,716.63 and 9,103.90 is: 13,650.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,484.51 : 27,716.63 = 9,103.90 : x
  2. Step 2: Convert to fraction form
    18,484.51/27,716.63 = 9,103.90/x
  3. Step 3: Cross multiply
    18,484.51x = 27,716.63 × 9,103.90
  4. Step 4: Simplify right side
    18,484.51x = 252,329,427.86
  5. Step 5: Solve for x
    x = 252,329,427.86/18,484.51
  6. Step 6: Final answer
    x = 13,650.86

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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.