Home / 12,841.62-17,721.21-7,176

Finding the Fourth Proportional to 12,841.62, 17,721.21 and 7,176

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Solution

The fourth proportional to 12,841.62, 17,721.21 and 7,176 is: 9,902.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,841.62 : 17,721.21 = 7,176 : x
  2. Step 2: Convert to fraction form
    12,841.62/17,721.21 = 7,176/x
  3. Step 3: Cross multiply
    12,841.62x = 17,721.21 × 7,176
  4. Step 4: Simplify right side
    12,841.62x = 127,167,402.96
  5. Step 5: Solve for x
    x = 127,167,402.96/12,841.62
  6. Step 6: Final answer
    x = 9,902.75

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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.