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Finding the Fourth Proportional to 18,805.56, 28,208.94 and 5,658.04

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Solution

The fourth proportional to 18,805.56, 28,208.94 and 5,658.04 is: 8,487.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.56 : 28,208.94 = 5,658.04 : x
  2. Step 2: Convert to fraction form
    18,805.56/28,208.94 = 5,658.04/x
  3. Step 3: Cross multiply
    18,805.56x = 28,208.94 × 5,658.04
  4. Step 4: Simplify right side
    18,805.56x = 159,607,310.88
  5. Step 5: Solve for x
    x = 159,607,310.88/18,805.56
  6. Step 6: Final answer
    x = 8,487.24

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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.