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Finding the Fourth Proportional to 18,319.88, 27,482.12 and 8,960.20

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Solution

The fourth proportional to 18,319.88, 27,482.12 and 8,960.20 is: 13,441.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,319.88 : 27,482.12 = 8,960.20 : x
  2. Step 2: Convert to fraction form
    18,319.88/27,482.12 = 8,960.20/x
  3. Step 3: Cross multiply
    18,319.88x = 27,482.12 × 8,960.20
  4. Step 4: Simplify right side
    18,319.88x = 246,245,291.62
  5. Step 5: Solve for x
    x = 246,245,291.62/18,319.88
  6. Step 6: Final answer
    x = 13,441.42

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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.