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Finding the Fourth Proportional to 11,120.92, 16,666.92 and 8,325.64

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Solution

The fourth proportional to 11,120.92, 16,666.92 and 8,325.64 is: 12,477.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.92 : 16,666.92 = 8,325.64 : x
  2. Step 2: Convert to fraction form
    11,120.92/16,666.92 = 8,325.64/x
  3. Step 3: Cross multiply
    11,120.92x = 16,666.92 × 8,325.64
  4. Step 4: Simplify right side
    11,120.92x = 138,762,775.83
  5. Step 5: Solve for x
    x = 138,762,775.83/11,120.92
  6. Step 6: Final answer
    x = 12,477.63

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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.