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Finding the Fourth Proportional to 12,608.15, 18,903.47 and 5,584.34

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Solution

The fourth proportional to 12,608.15, 18,903.47 and 5,584.34 is: 8,372.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,608.15 : 18,903.47 = 5,584.34 : x
  2. Step 2: Convert to fraction form
    12,608.15/18,903.47 = 5,584.34/x
  3. Step 3: Cross multiply
    12,608.15x = 18,903.47 × 5,584.34
  4. Step 4: Simplify right side
    12,608.15x = 105,563,281.22
  5. Step 5: Solve for x
    x = 105,563,281.22/12,608.15
  6. Step 6: Final answer
    x = 8,372.62

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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.