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Finding the Fourth Proportional to 11,298.39, 16,929.74 and 9,179.68

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Solution

The fourth proportional to 11,298.39, 16,929.74 and 9,179.68 is: 13,755.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,298.39 : 16,929.74 = 9,179.68 : x
  2. Step 2: Convert to fraction form
    11,298.39/16,929.74 = 9,179.68/x
  3. Step 3: Cross multiply
    11,298.39x = 16,929.74 × 9,179.68
  4. Step 4: Simplify right side
    11,298.39x = 155,409,608.05
  5. Step 5: Solve for x
    x = 155,409,608.05/11,298.39
  6. Step 6: Final answer
    x = 13,755.03

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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.