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Finding the Fourth Proportional to 11,329.84, 16,979.16 and 8,554.08

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Solution

The fourth proportional to 11,329.84, 16,979.16 and 8,554.08 is: 12,819.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,329.84 : 16,979.16 = 8,554.08 : x
  2. Step 2: Convert to fraction form
    11,329.84/16,979.16 = 8,554.08/x
  3. Step 3: Cross multiply
    11,329.84x = 16,979.16 × 8,554.08
  4. Step 4: Simplify right side
    11,329.84x = 145,241,092.97
  5. Step 5: Solve for x
    x = 145,241,092.97/11,329.84
  6. Step 6: Final answer
    x = 12,819.34

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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.