Home / 13,179.96-18,188.28-7,211.52

Finding the Fourth Proportional to 13,179.96, 18,188.28 and 7,211.52

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Solution

The fourth proportional to 13,179.96, 18,188.28 and 7,211.52 is: 9,951.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.96 : 18,188.28 = 7,211.52 : x
  2. Step 2: Convert to fraction form
    13,179.96/18,188.28 = 7,211.52/x
  3. Step 3: Cross multiply
    13,179.96x = 18,188.28 × 7,211.52
  4. Step 4: Simplify right side
    13,179.96x = 131,165,144.99
  5. Step 5: Solve for x
    x = 131,165,144.99/13,179.96
  6. Step 6: Final answer
    x = 9,951.86

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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.