Home / 13,584.82-18,748.80-8,279.50

Finding the Fourth Proportional to 13,584.82, 18,748.80 and 8,279.50

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Solution

The fourth proportional to 13,584.82, 18,748.80 and 8,279.50 is: 11,426.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,584.82 : 18,748.80 = 8,279.50 : x
  2. Step 2: Convert to fraction form
    13,584.82/18,748.80 = 8,279.50/x
  3. Step 3: Cross multiply
    13,584.82x = 18,748.80 × 8,279.50
  4. Step 4: Simplify right side
    13,584.82x = 155,230,689.60
  5. Step 5: Solve for x
    x = 155,230,689.60/13,584.82
  6. Step 6: Final answer
    x = 11,426.78

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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.