Home / 18,217.87-27,319.65-8,855.15

Finding the Fourth Proportional to 18,217.87, 27,319.65 and 8,855.15

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Solution

The fourth proportional to 18,217.87, 27,319.65 and 8,855.15 is: 13,279.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.87 : 27,319.65 = 8,855.15 : x
  2. Step 2: Convert to fraction form
    18,217.87/27,319.65 = 8,855.15/x
  3. Step 3: Cross multiply
    18,217.87x = 27,319.65 × 8,855.15
  4. Step 4: Simplify right side
    18,217.87x = 241,919,564.55
  5. Step 5: Solve for x
    x = 241,919,564.55/18,217.87
  6. Step 6: Final answer
    x = 13,279.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.