Home / 13,170.26-18,174.96-7,201.92

Finding the Fourth Proportional to 13,170.26, 18,174.96 and 7,201.92

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Solution

The fourth proportional to 13,170.26, 18,174.96 and 7,201.92 is: 9,938.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.26 : 18,174.96 = 7,201.92 : x
  2. Step 2: Convert to fraction form
    13,170.26/18,174.96 = 7,201.92/x
  3. Step 3: Cross multiply
    13,170.26x = 18,174.96 × 7,201.92
  4. Step 4: Simplify right side
    13,170.26x = 130,894,607.92
  5. Step 5: Solve for x
    x = 130,894,607.92/13,170.26
  6. Step 6: Final answer
    x = 9,938.65

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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.