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Finding the Fourth Proportional to 18,425.88, 27,638.82 and 7,753.32

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Solution

The fourth proportional to 18,425.88, 27,638.82 and 7,753.32 is: 11,629.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.88 : 27,638.82 = 7,753.32 : x
  2. Step 2: Convert to fraction form
    18,425.88/27,638.82 = 7,753.32/x
  3. Step 3: Cross multiply
    18,425.88x = 27,638.82 × 7,753.32
  4. Step 4: Simplify right side
    18,425.88x = 214,292,615.88
  5. Step 5: Solve for x
    x = 214,292,615.88/18,425.88
  6. Step 6: Final answer
    x = 11,629.98

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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.