Home / 20,883.18-31,304.79-7,732.02

Finding the Fourth Proportional to 20,883.18, 31,304.79 and 7,732.02

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Solution

The fourth proportional to 20,883.18, 31,304.79 and 7,732.02 is: 11,590.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.18 : 31,304.79 = 7,732.02 : x
  2. Step 2: Convert to fraction form
    20,883.18/31,304.79 = 7,732.02/x
  3. Step 3: Cross multiply
    20,883.18x = 31,304.79 × 7,732.02
  4. Step 4: Simplify right side
    20,883.18x = 242,049,262.38
  5. Step 5: Solve for x
    x = 242,049,262.38/20,883.18
  6. Step 6: Final answer
    x = 11,590.63

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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.