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Finding the Fourth Proportional to 12,443.52, 18,609.60 and 11,065.44

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Solution

The fourth proportional to 12,443.52, 18,609.60 and 11,065.44 is: 16,548.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,443.52 : 18,609.60 = 11,065.44 : x
  2. Step 2: Convert to fraction form
    12,443.52/18,609.60 = 11,065.44/x
  3. Step 3: Cross multiply
    12,443.52x = 18,609.60 × 11,065.44
  4. Step 4: Simplify right side
    12,443.52x = 205,923,412.22
  5. Step 5: Solve for x
    x = 205,923,412.22/12,443.52
  6. Step 6: Final answer
    x = 16,548.65

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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.