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Finding the Fourth Proportional to 14,712.48, 20,304 and 8,425.80

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Solution

The fourth proportional to 14,712.48, 20,304 and 8,425.80 is: 11,628.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,712.48 : 20,304 = 8,425.80 : x
  2. Step 2: Convert to fraction form
    14,712.48/20,304 = 8,425.80/x
  3. Step 3: Cross multiply
    14,712.48x = 20,304 × 8,425.80
  4. Step 4: Simplify right side
    14,712.48x = 171,077,443.20
  5. Step 5: Solve for x
    x = 171,077,443.20/14,712.48
  6. Step 6: Final answer
    x = 11,628.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.