Home / 13,321.23-18,383.20-7,352.89

Finding the Fourth Proportional to 13,321.23, 18,383.20 and 7,352.89

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Solution

The fourth proportional to 13,321.23, 18,383.20 and 7,352.89 is: 10,146.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.23 : 18,383.20 = 7,352.89 : x
  2. Step 2: Convert to fraction form
    13,321.23/18,383.20 = 7,352.89/x
  3. Step 3: Cross multiply
    13,321.23x = 18,383.20 × 7,352.89
  4. Step 4: Simplify right side
    13,321.23x = 135,169,647.45
  5. Step 5: Solve for x
    x = 135,169,647.45/13,321.23
  6. Step 6: Final answer
    x = 10,146.93

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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.