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Finding the Fourth Proportional to 18,902.94, 28,354.42 and 8,502.54

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Solution

The fourth proportional to 18,902.94, 28,354.42 and 8,502.54 is: 12,753.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.94 : 28,354.42 = 8,502.54 : x
  2. Step 2: Convert to fraction form
    18,902.94/28,354.42 = 8,502.54/x
  3. Step 3: Cross multiply
    18,902.94x = 28,354.42 × 8,502.54
  4. Step 4: Simplify right side
    18,902.94x = 241,084,590.23
  5. Step 5: Solve for x
    x = 241,084,590.23/18,902.94
  6. Step 6: Final answer
    x = 12,753.81

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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.