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Finding the Fourth Proportional to 14,455, 21,691.18 and 6,247

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Solution

The fourth proportional to 14,455, 21,691.18 and 6,247 is: 9,374.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,455 : 21,691.18 = 6,247 : x
  2. Step 2: Convert to fraction form
    14,455/21,691.18 = 6,247/x
  3. Step 3: Cross multiply
    14,455x = 21,691.18 × 6,247
  4. Step 4: Simplify right side
    14,455x = 135,504,801.46
  5. Step 5: Solve for x
    x = 135,504,801.46/14,455
  6. Step 6: Final answer
    x = 9,374.25

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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.