Home / 13,321.23-18,383.76-7,353.12

Finding the Fourth Proportional to 13,321.23, 18,383.76 and 7,353.12

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Solution

The fourth proportional to 13,321.23, 18,383.76 and 7,353.12 is: 10,147.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.23 : 18,383.76 = 7,353.12 : x
  2. Step 2: Convert to fraction form
    13,321.23/18,383.76 = 7,353.12/x
  3. Step 3: Cross multiply
    13,321.23x = 18,383.76 × 7,353.12
  4. Step 4: Simplify right side
    13,321.23x = 135,177,993.33
  5. Step 5: Solve for x
    x = 135,177,993.33/13,321.23
  6. Step 6: Final answer
    x = 10,147.56

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Half scale
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Double scale
Find fourth proportional to 13,322.23, 18,385.14 and 7,354.12
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.