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Finding the Fourth Proportional to 13,353, 20,032.74 and 4,119

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Solution

The fourth proportional to 13,353, 20,032.74 and 4,119 is: 6,179.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353 : 20,032.74 = 4,119 : x
  2. Step 2: Convert to fraction form
    13,353/20,032.74 = 4,119/x
  3. Step 3: Cross multiply
    13,353x = 20,032.74 × 4,119
  4. Step 4: Simplify right side
    13,353x = 82,514,856.06
  5. Step 5: Solve for x
    x = 82,514,856.06/13,353
  6. Step 6: Final answer
    x = 6,179.50

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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.