Home / 13,190.30-18,202.70-7,222.52

Finding the Fourth Proportional to 13,190.30, 18,202.70 and 7,222.52

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Solution

The fourth proportional to 13,190.30, 18,202.70 and 7,222.52 is: 9,967.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.30 : 18,202.70 = 7,222.52 : x
  2. Step 2: Convert to fraction form
    13,190.30/18,202.70 = 7,222.52/x
  3. Step 3: Cross multiply
    13,190.30x = 18,202.70 × 7,222.52
  4. Step 4: Simplify right side
    13,190.30x = 131,469,364.80
  5. Step 5: Solve for x
    x = 131,469,364.80/13,190.30
  6. Step 6: Final answer
    x = 9,967.12

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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.