Home / 12,914.12-17,821.62-7,171.97

Finding the Fourth Proportional to 12,914.12, 17,821.62 and 7,171.97

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Solution

The fourth proportional to 12,914.12, 17,821.62 and 7,171.97 is: 9,897.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,914.12 : 17,821.62 = 7,171.97 : x
  2. Step 2: Convert to fraction form
    12,914.12/17,821.62 = 7,171.97/x
  3. Step 3: Cross multiply
    12,914.12x = 17,821.62 × 7,171.97
  4. Step 4: Simplify right side
    12,914.12x = 127,816,034.88
  5. Step 5: Solve for x
    x = 127,816,034.88/12,914.12
  6. Step 6: Final answer
    x = 9,897.38

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1.5x scale

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.