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Finding the Fourth Proportional to 11,339.52, 15,644.52 and 7,146.96

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Solution

The fourth proportional to 11,339.52, 15,644.52 and 7,146.96 is: 9,860.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,339.52 : 15,644.52 = 7,146.96 : x
  2. Step 2: Convert to fraction form
    11,339.52/15,644.52 = 7,146.96/x
  3. Step 3: Cross multiply
    11,339.52x = 15,644.52 × 7,146.96
  4. Step 4: Simplify right side
    11,339.52x = 111,810,758.66
  5. Step 5: Solve for x
    x = 111,810,758.66/11,339.52
  6. Step 6: Final answer
    x = 9,860.27

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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.