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Finding the Fourth Proportional to 18,573.52, 27,845.68 and 12,712.36

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Solution

The fourth proportional to 18,573.52, 27,845.68 and 12,712.36 is: 19,058.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,573.52 : 27,845.68 = 12,712.36 : x
  2. Step 2: Convert to fraction form
    18,573.52/27,845.68 = 12,712.36/x
  3. Step 3: Cross multiply
    18,573.52x = 27,845.68 × 12,712.36
  4. Step 4: Simplify right side
    18,573.52x = 353,984,308.60
  5. Step 5: Solve for x
    x = 353,984,308.60/18,573.52
  6. Step 6: Final answer
    x = 19,058.55

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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.