Home / 13,171.92-18,174.96-7,866.42

Finding the Fourth Proportional to 13,171.92, 18,174.96 and 7,866.42

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Solution

The fourth proportional to 13,171.92, 18,174.96 and 7,866.42 is: 10,854.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.92 : 18,174.96 = 7,866.42 : x
  2. Step 2: Convert to fraction form
    13,171.92/18,174.96 = 7,866.42/x
  3. Step 3: Cross multiply
    13,171.92x = 18,174.96 × 7,866.42
  4. Step 4: Simplify right side
    13,171.92x = 142,971,868.84
  5. Step 5: Solve for x
    x = 142,971,868.84/13,171.92
  6. Step 6: Final answer
    x = 10,854.29

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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.