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Finding the Fourth Proportional to 12,598.92, 18,879.78 and 11,214.90

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Solution

The fourth proportional to 12,598.92, 18,879.78 and 11,214.90 is: 16,805.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,598.92 : 18,879.78 = 11,214.90 : x
  2. Step 2: Convert to fraction form
    12,598.92/18,879.78 = 11,214.90/x
  3. Step 3: Cross multiply
    12,598.92x = 18,879.78 × 11,214.90
  4. Step 4: Simplify right side
    12,598.92x = 211,734,844.72
  5. Step 5: Solve for x
    x = 211,734,844.72/12,598.92
  6. Step 6: Final answer
    x = 16,805.79

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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.