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Finding the Fourth Proportional to 12,004.62, 18,000.18 and 8,260.80

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Solution

The fourth proportional to 12,004.62, 18,000.18 and 8,260.80 is: 12,386.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,004.62 : 18,000.18 = 8,260.80 : x
  2. Step 2: Convert to fraction form
    12,004.62/18,000.18 = 8,260.80/x
  3. Step 3: Cross multiply
    12,004.62x = 18,000.18 × 8,260.80
  4. Step 4: Simplify right side
    12,004.62x = 148,695,886.94
  5. Step 5: Solve for x
    x = 148,695,886.94/12,004.62
  6. Step 6: Final answer
    x = 12,386.56

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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.