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Finding the Fourth Proportional to 12,281.31, 16,945.27 and 7,245.14

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Solution

The fourth proportional to 12,281.31, 16,945.27 and 7,245.14 is: 9,996.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.31 : 16,945.27 = 7,245.14 : x
  2. Step 2: Convert to fraction form
    12,281.31/16,945.27 = 7,245.14/x
  3. Step 3: Cross multiply
    12,281.31x = 16,945.27 × 7,245.14
  4. Step 4: Simplify right side
    12,281.31x = 122,770,750.65
  5. Step 5: Solve for x
    x = 122,770,750.65/12,281.31
  6. Step 6: Final answer
    x = 9,996.55

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1.5x scale

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.