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Finding the Fourth Proportional to 22,987.47, 34,481.21 and 7,405.09

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Solution

The fourth proportional to 22,987.47, 34,481.21 and 7,405.09 is: 11,107.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,987.47 : 34,481.21 = 7,405.09 : x
  2. Step 2: Convert to fraction form
    22,987.47/34,481.21 = 7,405.09/x
  3. Step 3: Cross multiply
    22,987.47x = 34,481.21 × 7,405.09
  4. Step 4: Simplify right side
    22,987.47x = 255,336,426.33
  5. Step 5: Solve for x
    x = 255,336,426.33/22,987.47
  6. Step 6: Final answer
    x = 11,107.64

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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.