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Finding the Fourth Proportional to 11,665.88, 16,093.36 and 7,890.36

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Solution

The fourth proportional to 11,665.88, 16,093.36 and 7,890.36 is: 10,884.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,665.88 : 16,093.36 = 7,890.36 : x
  2. Step 2: Convert to fraction form
    11,665.88/16,093.36 = 7,890.36/x
  3. Step 3: Cross multiply
    11,665.88x = 16,093.36 × 7,890.36
  4. Step 4: Simplify right side
    11,665.88x = 126,982,384.28
  5. Step 5: Solve for x
    x = 126,982,384.28/11,665.88
  6. Step 6: Final answer
    x = 10,884.94

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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.