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Finding the Fourth Proportional to 18,863.10, 28,294.65 and 4,823.16

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Solution

The fourth proportional to 18,863.10, 28,294.65 and 4,823.16 is: 7,234.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.10 : 28,294.65 = 4,823.16 : x
  2. Step 2: Convert to fraction form
    18,863.10/28,294.65 = 4,823.16/x
  3. Step 3: Cross multiply
    18,863.10x = 28,294.65 × 4,823.16
  4. Step 4: Simplify right side
    18,863.10x = 136,469,624.09
  5. Step 5: Solve for x
    x = 136,469,624.09/18,863.10
  6. Step 6: Final answer
    x = 7,234.74

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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.