Home / 13,190.73-18,203.21-7,222.77

Finding the Fourth Proportional to 13,190.73, 18,203.21 and 7,222.77

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Solution

The fourth proportional to 13,190.73, 18,203.21 and 7,222.77 is: 9,967.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.73 : 18,203.21 = 7,222.77 : x
  2. Step 2: Convert to fraction form
    13,190.73/18,203.21 = 7,222.77/x
  3. Step 3: Cross multiply
    13,190.73x = 18,203.21 × 7,222.77
  4. Step 4: Simplify right side
    13,190.73x = 131,477,562.98
  5. Step 5: Solve for x
    x = 131,477,562.98/13,190.73
  6. Step 6: Final answer
    x = 9,967.42

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Half scale
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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.