Home / 13,286.48-18,337-8,584.40

Finding the Fourth Proportional to 13,286.48, 18,337 and 8,584.40

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Solution

The fourth proportional to 13,286.48, 18,337 and 8,584.40 is: 11,847.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.48 : 18,337 = 8,584.40 : x
  2. Step 2: Convert to fraction form
    13,286.48/18,337 = 8,584.40/x
  3. Step 3: Cross multiply
    13,286.48x = 18,337 × 8,584.40
  4. Step 4: Simplify right side
    13,286.48x = 157,412,142.80
  5. Step 5: Solve for x
    x = 157,412,142.80/13,286.48
  6. Step 6: Final answer
    x = 11,847.54

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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.