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Finding the Fourth Proportional to 14,499.03, 20,007.90 and 8,211

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Solution

The fourth proportional to 14,499.03, 20,007.90 and 8,211 is: 11,330.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,499.03 : 20,007.90 = 8,211 : x
  2. Step 2: Convert to fraction form
    14,499.03/20,007.90 = 8,211/x
  3. Step 3: Cross multiply
    14,499.03x = 20,007.90 × 8,211
  4. Step 4: Simplify right side
    14,499.03x = 164,284,866.90
  5. Step 5: Solve for x
    x = 164,284,866.90/14,499.03
  6. Step 6: Final answer
    x = 11,330.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.