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Finding the Fourth Proportional to 11,162.88, 16,811.16 and 10,166.42

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Solution

The fourth proportional to 11,162.88, 16,811.16 and 10,166.42 is: 15,310.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,162.88 : 16,811.16 = 10,166.42 : x
  2. Step 2: Convert to fraction form
    11,162.88/16,811.16 = 10,166.42/x
  3. Step 3: Cross multiply
    11,162.88x = 16,811.16 × 10,166.42
  4. Step 4: Simplify right side
    11,162.88x = 170,909,313.25
  5. Step 5: Solve for x
    x = 170,909,313.25/11,162.88
  6. Step 6: Final answer
    x = 15,310.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.