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Finding the Fourth Proportional to 18,487.08, 27,728.46 and 4,635

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Solution

The fourth proportional to 18,487.08, 27,728.46 and 4,635 is: 6,951.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.08 : 27,728.46 = 4,635 : x
  2. Step 2: Convert to fraction form
    18,487.08/27,728.46 = 4,635/x
  3. Step 3: Cross multiply
    18,487.08x = 27,728.46 × 4,635
  4. Step 4: Simplify right side
    18,487.08x = 128,521,412.10
  5. Step 5: Solve for x
    x = 128,521,412.10/18,487.08
  6. Step 6: Final answer
    x = 6,951.96

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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.