Home / 13,190.82-18,203.76-7,222.92

Finding the Fourth Proportional to 13,190.82, 18,203.76 and 7,222.92

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Solution

The fourth proportional to 13,190.82, 18,203.76 and 7,222.92 is: 9,967.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.82 : 18,203.76 = 7,222.92 : x
  2. Step 2: Convert to fraction form
    13,190.82/18,203.76 = 7,222.92/x
  3. Step 3: Cross multiply
    13,190.82x = 18,203.76 × 7,222.92
  4. Step 4: Simplify right side
    13,190.82x = 131,484,302.18
  5. Step 5: Solve for x
    x = 131,484,302.18/13,190.82
  6. Step 6: Final answer
    x = 9,967.86

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Double scale
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Similar ratio
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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.