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Finding the Fourth Proportional to 17,819.64, 24,591.84 and 9,861.72

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Solution

The fourth proportional to 17,819.64, 24,591.84 and 9,861.72 is: 13,609.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,819.64 : 24,591.84 = 9,861.72 : x
  2. Step 2: Convert to fraction form
    17,819.64/24,591.84 = 9,861.72/x
  3. Step 3: Cross multiply
    17,819.64x = 24,591.84 × 9,861.72
  4. Step 4: Simplify right side
    17,819.64x = 242,517,840.36
  5. Step 5: Solve for x
    x = 242,517,840.36/17,819.64
  6. Step 6: Final answer
    x = 13,609.58

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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.