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Finding the Fourth Proportional to 18,272, 27,391.56 and 6,577

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Solution

The fourth proportional to 18,272, 27,391.56 and 6,577 is: 9,859.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,272 : 27,391.56 = 6,577 : x
  2. Step 2: Convert to fraction form
    18,272/27,391.56 = 6,577/x
  3. Step 3: Cross multiply
    18,272x = 27,391.56 × 6,577
  4. Step 4: Simplify right side
    18,272x = 180,154,290.12
  5. Step 5: Solve for x
    x = 180,154,290.12/18,272
  6. Step 6: Final answer
    x = 9,859.58

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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.