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Finding the Fourth Proportional to 11,760.40, 17,644.68 and 7,827.44

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Solution

The fourth proportional to 11,760.40, 17,644.68 and 7,827.44 is: 11,743.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,760.40 : 17,644.68 = 7,827.44 : x
  2. Step 2: Convert to fraction form
    11,760.40/17,644.68 = 7,827.44/x
  3. Step 3: Cross multiply
    11,760.40x = 17,644.68 × 7,827.44
  4. Step 4: Simplify right side
    11,760.40x = 138,112,674.02
  5. Step 5: Solve for x
    x = 138,112,674.02/11,760.40
  6. Step 6: Final answer
    x = 11,743.88

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1.5x scale

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.