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Finding the Fourth Proportional to 11,130.40, 16,694.52 and 2,922.40

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Solution

The fourth proportional to 11,130.40, 16,694.52 and 2,922.40 is: 4,383.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130.40 : 16,694.52 = 2,922.40 : x
  2. Step 2: Convert to fraction form
    11,130.40/16,694.52 = 2,922.40/x
  3. Step 3: Cross multiply
    11,130.40x = 16,694.52 × 2,922.40
  4. Step 4: Simplify right side
    11,130.40x = 48,788,065.25
  5. Step 5: Solve for x
    x = 48,788,065.25/11,130.40
  6. Step 6: Final answer
    x = 4,383.32

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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.