Home / 13,321.05-18,383.04-7,352.72

Finding the Fourth Proportional to 13,321.05, 18,383.04 and 7,352.72

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Solution

The fourth proportional to 13,321.05, 18,383.04 and 7,352.72 is: 10,146.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.05 : 18,383.04 = 7,352.72 : x
  2. Step 2: Convert to fraction form
    13,321.05/18,383.04 = 7,352.72/x
  3. Step 3: Cross multiply
    13,321.05x = 18,383.04 × 7,352.72
  4. Step 4: Simplify right side
    13,321.05x = 135,165,307.38
  5. Step 5: Solve for x
    x = 135,165,307.38/13,321.05
  6. Step 6: Final answer
    x = 10,146.75

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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.