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Finding the Fourth Proportional to 18,354.55, 27,532.86 and 5,205.88

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Solution

The fourth proportional to 18,354.55, 27,532.86 and 5,205.88 is: 7,809.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,354.55 : 27,532.86 = 5,205.88 : x
  2. Step 2: Convert to fraction form
    18,354.55/27,532.86 = 5,205.88/x
  3. Step 3: Cross multiply
    18,354.55x = 27,532.86 × 5,205.88
  4. Step 4: Simplify right side
    18,354.55x = 143,332,627.55
  5. Step 5: Solve for x
    x = 143,332,627.55/18,354.55
  6. Step 6: Final answer
    x = 7,809.11

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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.