Home / 13,321.45-18,383.79-7,353.10

Finding the Fourth Proportional to 13,321.45, 18,383.79 and 7,353.10

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Solution

The fourth proportional to 13,321.45, 18,383.79 and 7,353.10 is: 10,147.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.45 : 18,383.79 = 7,353.10 : x
  2. Step 2: Convert to fraction form
    13,321.45/18,383.79 = 7,353.10/x
  3. Step 3: Cross multiply
    13,321.45x = 18,383.79 × 7,353.10
  4. Step 4: Simplify right side
    13,321.45x = 135,177,846.25
  5. Step 5: Solve for x
    x = 135,177,846.25/13,321.45
  6. Step 6: Final answer
    x = 10,147.38

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Half scale
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Double scale
Find fourth proportional to 13,322.45, 18,385.17 and 7,354.10
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.