Home / 13,188.27-18,199.44-7,219.56

Finding the Fourth Proportional to 13,188.27, 18,199.44 and 7,219.56

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Solution

The fourth proportional to 13,188.27, 18,199.44 and 7,219.56 is: 9,962.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.27 : 18,199.44 = 7,219.56 : x
  2. Step 2: Convert to fraction form
    13,188.27/18,199.44 = 7,219.56/x
  3. Step 3: Cross multiply
    13,188.27x = 18,199.44 × 7,219.56
  4. Step 4: Simplify right side
    13,188.27x = 131,391,949.05
  5. Step 5: Solve for x
    x = 131,391,949.05/13,188.27
  6. Step 6: Final answer
    x = 9,962.79

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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.