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Finding the Fourth Proportional to 14,630.88, 20,179.68 and 9,320.88

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Solution

The fourth proportional to 14,630.88, 20,179.68 and 9,320.88 is: 12,855.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,630.88 : 20,179.68 = 9,320.88 : x
  2. Step 2: Convert to fraction form
    14,630.88/20,179.68 = 9,320.88/x
  3. Step 3: Cross multiply
    14,630.88x = 20,179.68 × 9,320.88
  4. Step 4: Simplify right side
    14,630.88x = 188,092,375.72
  5. Step 5: Solve for x
    x = 188,092,375.72/14,630.88
  6. Step 6: Final answer
    x = 12,855.85

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1.5x scale

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.