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Finding the Fourth Proportional to 12,331.98, 18,504.05 and 7,650.79

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Solution

The fourth proportional to 12,331.98, 18,504.05 and 7,650.79 is: 11,479.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,331.98 : 18,504.05 = 7,650.79 : x
  2. Step 2: Convert to fraction form
    12,331.98/18,504.05 = 7,650.79/x
  3. Step 3: Cross multiply
    12,331.98x = 18,504.05 × 7,650.79
  4. Step 4: Simplify right side
    12,331.98x = 141,570,516.19
  5. Step 5: Solve for x
    x = 141,570,516.19/12,331.98
  6. Step 6: Final answer
    x = 11,479.95

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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.