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Finding the Fourth Proportional to 11,129.28, 16,693.92 and 5,945.28

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Solution

The fourth proportional to 11,129.28, 16,693.92 and 5,945.28 is: 8,917.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.28 : 16,693.92 = 5,945.28 : x
  2. Step 2: Convert to fraction form
    11,129.28/16,693.92 = 5,945.28/x
  3. Step 3: Cross multiply
    11,129.28x = 16,693.92 × 5,945.28
  4. Step 4: Simplify right side
    11,129.28x = 99,250,028.70
  5. Step 5: Solve for x
    x = 99,250,028.70/11,129.28
  6. Step 6: Final answer
    x = 8,917.92

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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.