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Finding the Fourth Proportional to 11,153.56, 16,730.28 and 2,945.56

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Solution

The fourth proportional to 11,153.56, 16,730.28 and 2,945.56 is: 4,418.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.56 : 16,730.28 = 2,945.56 : x
  2. Step 2: Convert to fraction form
    11,153.56/16,730.28 = 2,945.56/x
  3. Step 3: Cross multiply
    11,153.56x = 16,730.28 × 2,945.56
  4. Step 4: Simplify right side
    11,153.56x = 49,280,043.56
  5. Step 5: Solve for x
    x = 49,280,043.56/11,153.56
  6. Step 6: Final answer
    x = 4,418.32

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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.