Home / 13,171.93-18,177.62-7,869.80

Finding the Fourth Proportional to 13,171.93, 18,177.62 and 7,869.80

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Solution

The fourth proportional to 13,171.93, 18,177.62 and 7,869.80 is: 10,860.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.93 : 18,177.62 = 7,869.80 : x
  2. Step 2: Convert to fraction form
    13,171.93/18,177.62 = 7,869.80/x
  3. Step 3: Cross multiply
    13,171.93x = 18,177.62 × 7,869.80
  4. Step 4: Simplify right side
    13,171.93x = 143,054,194.53
  5. Step 5: Solve for x
    x = 143,054,194.53/13,171.93
  6. Step 6: Final answer
    x = 10,860.54

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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.