Home / 13,286.30-18,314.79-8,564.54

Finding the Fourth Proportional to 13,286.30, 18,314.79 and 8,564.54

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Solution

The fourth proportional to 13,286.30, 18,314.79 and 8,564.54 is: 11,805.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.30 : 18,314.79 = 8,564.54 : x
  2. Step 2: Convert to fraction form
    13,286.30/18,314.79 = 8,564.54/x
  3. Step 3: Cross multiply
    13,286.30x = 18,314.79 × 8,564.54
  4. Step 4: Simplify right side
    13,286.30x = 156,857,751.55
  5. Step 5: Solve for x
    x = 156,857,751.55/13,286.30
  6. Step 6: Final answer
    x = 11,805.98

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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.