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Finding the Fourth Proportional to 14,646, 21,972.75 and 4,257.75

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Solution

The fourth proportional to 14,646, 21,972.75 and 4,257.75 is: 6,387.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,646 : 21,972.75 = 4,257.75 : x
  2. Step 2: Convert to fraction form
    14,646/21,972.75 = 4,257.75/x
  3. Step 3: Cross multiply
    14,646x = 21,972.75 × 4,257.75
  4. Step 4: Simplify right side
    14,646x = 93,554,460.35
  5. Step 5: Solve for x
    x = 93,554,460.35/14,646
  6. Step 6: Final answer
    x = 6,387.71

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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.