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Finding the Fourth Proportional to 11,333.70, 15,648.12 and 8,676.36

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Solution

The fourth proportional to 11,333.70, 15,648.12 and 8,676.36 is: 11,979.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,333.70 : 15,648.12 = 8,676.36 : x
  2. Step 2: Convert to fraction form
    11,333.70/15,648.12 = 8,676.36/x
  3. Step 3: Cross multiply
    11,333.70x = 15,648.12 × 8,676.36
  4. Step 4: Simplify right side
    11,333.70x = 135,768,722.44
  5. Step 5: Solve for x
    x = 135,768,722.44/11,333.70
  6. Step 6: Final answer
    x = 11,979.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.