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Finding the Fourth Proportional to 16,631.25, 22,951.16 and 9,179.25

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Solution

The fourth proportional to 16,631.25, 22,951.16 and 9,179.25 is: 12,667.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,631.25 : 22,951.16 = 9,179.25 : x
  2. Step 2: Convert to fraction form
    16,631.25/22,951.16 = 9,179.25/x
  3. Step 3: Cross multiply
    16,631.25x = 22,951.16 × 9,179.25
  4. Step 4: Simplify right side
    16,631.25x = 210,674,389.53
  5. Step 5: Solve for x
    x = 210,674,389.53/16,631.25
  6. Step 6: Final answer
    x = 12,667.38

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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.