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Finding the Fourth Proportional to 12,539.76, 18,798.12 and 4,326

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Solution

The fourth proportional to 12,539.76, 18,798.12 and 4,326 is: 6,485.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.76 : 18,798.12 = 4,326 : x
  2. Step 2: Convert to fraction form
    12,539.76/18,798.12 = 4,326/x
  3. Step 3: Cross multiply
    12,539.76x = 18,798.12 × 4,326
  4. Step 4: Simplify right side
    12,539.76x = 81,320,667.12
  5. Step 5: Solve for x
    x = 81,320,667.12/12,539.76
  6. Step 6: Final answer
    x = 6,485.03

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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.