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Finding the Fourth Proportional to 12,605.58, 18,920.04 and 6,369.97

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Solution

The fourth proportional to 12,605.58, 18,920.04 and 6,369.97 is: 9,560.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.58 : 18,920.04 = 6,369.97 : x
  2. Step 2: Convert to fraction form
    12,605.58/18,920.04 = 6,369.97/x
  3. Step 3: Cross multiply
    12,605.58x = 18,920.04 × 6,369.97
  4. Step 4: Simplify right side
    12,605.58x = 120,520,087.20
  5. Step 5: Solve for x
    x = 120,520,087.20/12,605.58
  6. Step 6: Final answer
    x = 9,560.85

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1.5x scale

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.