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Finding the Fourth Proportional to 12,008.62, 18,008.11 and 4,983.85

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Solution

The fourth proportional to 12,008.62, 18,008.11 and 4,983.85 is: 7,473.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,008.62 : 18,008.11 = 4,983.85 : x
  2. Step 2: Convert to fraction form
    12,008.62/18,008.11 = 4,983.85/x
  3. Step 3: Cross multiply
    12,008.62x = 18,008.11 × 4,983.85
  4. Step 4: Simplify right side
    12,008.62x = 89,749,719.02
  5. Step 5: Solve for x
    x = 89,749,719.02/12,008.62
  6. Step 6: Final answer
    x = 7,473.77

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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.