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Finding the Fourth Proportional to 30,540.60, 45,798.60 and 12,759.61

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Solution

The fourth proportional to 30,540.60, 45,798.60 and 12,759.61 is: 19,134.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,540.60 : 45,798.60 = 12,759.61 : x
  2. Step 2: Convert to fraction form
    30,540.60/45,798.60 = 12,759.61/x
  3. Step 3: Cross multiply
    30,540.60x = 45,798.60 × 12,759.61
  4. Step 4: Simplify right side
    30,540.60x = 584,372,222.00
  5. Step 5: Solve for x
    x = 584,372,222.00/30,540.60
  6. Step 6: Final answer
    x = 19,134.27

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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.