Home / 13,171.14-18,175.86-7,202.79

Finding the Fourth Proportional to 13,171.14, 18,175.86 and 7,202.79

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Solution

The fourth proportional to 13,171.14, 18,175.86 and 7,202.79 is: 9,939.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.14 : 18,175.86 = 7,202.79 : x
  2. Step 2: Convert to fraction form
    13,171.14/18,175.86 = 7,202.79/x
  3. Step 3: Cross multiply
    13,171.14x = 18,175.86 × 7,202.79
  4. Step 4: Simplify right side
    13,171.14x = 130,916,902.65
  5. Step 5: Solve for x
    x = 130,916,902.65/13,171.14
  6. Step 6: Final answer
    x = 9,939.68

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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.