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Finding the Fourth Proportional to 12,339.54, 18,477.92 and 8,167.03

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Solution

The fourth proportional to 12,339.54, 18,477.92 and 8,167.03 is: 12,229.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.54 : 18,477.92 = 8,167.03 : x
  2. Step 2: Convert to fraction form
    12,339.54/18,477.92 = 8,167.03/x
  3. Step 3: Cross multiply
    12,339.54x = 18,477.92 × 8,167.03
  4. Step 4: Simplify right side
    12,339.54x = 150,909,701.20
  5. Step 5: Solve for x
    x = 150,909,701.20/12,339.54
  6. Step 6: Final answer
    x = 12,229.77

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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.