Home / 13,179.11-18,187.54-7,211.03

Finding the Fourth Proportional to 13,179.11, 18,187.54 and 7,211.03

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Solution

The fourth proportional to 13,179.11, 18,187.54 and 7,211.03 is: 9,951.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.11 : 18,187.54 = 7,211.03 : x
  2. Step 2: Convert to fraction form
    13,179.11/18,187.54 = 7,211.03/x
  3. Step 3: Cross multiply
    13,179.11x = 18,187.54 × 7,211.03
  4. Step 4: Simplify right side
    13,179.11x = 131,150,787.60
  5. Step 5: Solve for x
    x = 131,150,787.60/13,179.11
  6. Step 6: Final answer
    x = 9,951.42

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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.