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Finding the Fourth Proportional to 28,978.94, 43,463.54 and 13,179.08

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Solution

The fourth proportional to 28,978.94, 43,463.54 and 13,179.08 is: 19,766.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978.94 : 43,463.54 = 13,179.08 : x
  2. Step 2: Convert to fraction form
    28,978.94/43,463.54 = 13,179.08/x
  3. Step 3: Cross multiply
    28,978.94x = 43,463.54 × 13,179.08
  4. Step 4: Simplify right side
    28,978.94x = 572,809,470.74
  5. Step 5: Solve for x
    x = 572,809,470.74/28,978.94
  6. Step 6: Final answer
    x = 19,766.41

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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.